# n8n Trustpilot Review Digest: 8 ProLevelMax Mistakes

> Fix the n8n ProLevelMax review workflow: invalid key format, testing with Run, wrong field names, timeouts, unreadable AI JSON and empty columns.

Source: https://learn.ynteractive.com/content/blog/n8n-prolevelmax-review-digest-mistakes · Updated 2026-10-20 · Free from Stepthrough (https://learn.ynteractive.com)

Quick answer

The most common mistake in the n8n ProLevelMax review workflow is testing in the wrong place: clicking **Run** in the console's **Collect** form charges your balance, and you don't need it, because n8n makes the call. The next is reading **invalid key format** as a broken node when only the key is missing. The free [n8n ProLevelMax review digest lesson](https://learn.ynteractive.com/modules/n8n-prolevelmax-review-digest) shows both on real screens from 20 October 2026.

Last updated October 20, 2026

[Take the free module →](https://learn.ynteractive.com/courses/n8n-jump-start/21)Module 21 of the free [n8n Jump Start](https://learn.ynteractive.com/courses/n8n-jump-start) course, about 10 minutes. No account needed.

By [Robert Breen](https://learn.ynteractive.com/content/about) · Published October 20, 2026 · Updated October 20, 2026 · 5 min read

ProLevelMax · n8n · Troubleshooting · Google Sheets

The example is Marcus Reed, who runs Fieldstone [CRM](https://learn.ynteractive.com/content/glossary/crm) Consulting (both made up). Every Friday the workflow reads the newest Trustpilot reviews of pipedrive.com and adds one row of themes to Google Sheets. In the lesson the ProLevelMax call used a placeholder key, and the later steps ran on pinned SAMPLE reviews.

## What are the most common mistakes?

| # | Mistake | Fix |
| --- | --- | --- |
| 1 | Clicking **Run** in **Collect** to test | Read the fields, click **Close**, let n8n call |
| 2 | Key in the [JSON](https://learn.ynteractive.com/content/glossary/json) body or URL | [Bearer Auth](https://learn.ynteractive.com/content/glossary/bearer-token) credential, **Bearer Token** |
| 3 | Reading **invalid key format** as a broken node | Paste the real key and run again |
| 4 | Guessing field names | Copy them from the **Collect** form |
| 5 | Default timeout | Set **Timeout** to 2 minutes |
| 6 | Not checking field names in a real run | Adjust **Keep rating and text** to match |
| 7 | A prompt that allows any reply | Ask for JSON only, with three fixed keys |
| 8 | Sheet headers that don't match | Row 1 must match the field names exactly |

## Why should you never test with Run?

**1. Clicking Run in Collect.** In the lesson, **Collect** is only for reading the source's fields: **companyUrls**, **maxReviewsPerCompany**, **stars**, **languages**, **sort**, **date** and more. **Run** would charge your balance. Close the form and let the HTTP Request node make the call. The lesson never ran **Collect**, so nothing was charged.

## Where should the ProLevelMax key go?

**2. Key in the JSON body or URL.** The body holds the source and its input, nothing else. In **Get new reviews (ProLevelMax)**, set **Authentication** to **Generic Credential Type** and **Generic Auth Type** to **Bearer Auth**, then paste the key into the credential's **Bearer Token**. The lesson's credential is named **ProLevelMax - add your key**. See [bearer token](https://learn.ynteractive.com/content/glossary/bearer-token) for how n8n sends it.

**3. Reading invalid key format as a broken node.** With a placeholder in the credential, ProLevelMax answered **Authorization failed**: **invalid key format**. That means n8n reached ProLevelMax with the right URL and header. Paste your real key and execute the node again.

## Why does the request return nothing useful?

**4. Guessing field names.** The body uses the exact names from the **Collect** form, inside **input**: `"companyUrls": ["pipedrive.com"]` (a list), `"maxReviewsPerCompany": 30`, `"sort": "recency"` for the newest, and `"languages": ["en"]`. **scraper** is the source id, **procli_trustpilot_a**, and **maxItems** is 30. If you switch to another review site, read that source's own **Collect** form, because each one has its own fields.

**5. Default timeout.** Collecting reviews takes a little while. The lesson sets the node's **Timeout** option to 2 minutes. The [workflow timeout](https://learn.ynteractive.com/content/glossary/workflow-timeout) entry explains why long calls need room.

## Why are the AI themes or sheet columns empty?

**6. Not checking field names in a real run.** ProLevelMax returns the reviews in **items**. **Keep rating and text** reads each review's rating, title, text and date, and it checks a few common field names for each. The lesson's own note says to check one real run's output and adjust the names if ProLevelMax's differ. Since the lesson ran on sample reviews, do this on your first real run.

**7. A prompt that allows any reply.** **Find the themes** says: use only what the reviews say, invent no numbers, and reply with JSON only, with **top_complaints**, **top_praise** and **talking_point**. Without that fixed shape, **Make the sheet row** can't put each answer in its own column. That node strips a code fence if the model adds one, and if it still can't read the JSON, the raw answer lands in **Top complaints**. If you see a long answer there, tighten the prompt. More on this in [structured output](https://learn.ynteractive.com/content/glossary/structured-output).

**8. Sheet headers that don't match.** **Add this week's row** uses **Append Row** with **Mapping Column Mode** set to **Map Automatically**, so each field lands in the column with the same name. Row 1 must read **Week**, **Company**, **Reviews read**, **Average rating**, **Top complaints**, **Top praise**, **Talking point**. The lesson's guide page has a CSV with these headers. Paste your sheet's URL in **Document**; the template's URL is a placeholder.

One habit, not a setup step: read a few of the reviews behind a summary before you quote it to a client. The lesson's themes came from 8 made-up sample reviews, so treat them as an example of the format only.

## Try it free, step by step

**n8n + ProLevelMax: Weekly Review Themes From Trustpilot to Google Sheets**. Stop reading reviews one by one. Every Friday n8n asks ProLevelMax for a company's newest Trustpilot reviews, AI sums up the top complaints and praise, and one row lands in Google Sheets, for about… You do every step yourself in a practice copy of n8n, it checks your work as you go, and “Do it for me” finishes any step you get stuck on. Free, and nothing touches your real accounts.

[Start the free lesson](https://learn.ynteractive.com/modules/n8n-prolevelmax-review-digest)

[Or read the full step-by-step guide](https://learn.ynteractive.com/content/n8n-prolevelmax-trustpilot-review-themes-google-sheets)

## Key takeaways

- **Collect** is for reading fields. **Run** charges your balance.
- The key lives in a Bearer Auth credential, never the body.
- **invalid key format** means only the key is wrong or missing.
- Copy field names from **Collect** and give the call a 2-minute timeout.
- Ask the AI for fixed JSON keys and match the sheet headers exactly.

## Frequently asked questions

**Do I need a new URL for another review site?**

No. Every source uses `https://prolevelmax.com/v1/run`. Change the **scraper** id and the **input** fields.

**Why does my row show the whole AI answer in Top complaints?**

**Make the sheet row** couldn't read the AI's reply as JSON, so it kept the raw text there to avoid losing it. Check the prompt still says JSON only.

**Why is Average rating blank?**

**Keep rating and text** only averages reviews that have a rating it can read. If the field name in your real output is different, add it to the code.

**Where are more answers?**

The [n8n ProLevelMax review digest FAQ](https://learn.ynteractive.com/content/blog/n8n-prolevelmax-review-digest-faq) covers each node, and the [ProLevelMax Reddit n8n mistakes](https://learn.ynteractive.com/content/blog/prolevelmax-reddit-n8n-mistakes) cover the Reddit workflow. The [cheat sheets](https://learn.ynteractive.com/content/cheat-sheets) page has a one-page version.

## Free lessons in this post

- [n8n + ProLevelMax: Weekly Review Themes From Trustpilot to Google Sheets](https://learn.ynteractive.com/content/n8n-prolevelmax-trustpilot-review-themes-google-sheets): Stop reading reviews one by one. Every Friday n8n asks ProLevelMax for a company's newest Trustpilot reviews, AI sums up the top complaints and praise, and one row…

## Watch it in a free lesson: n8n AI Agent Tutorial: Save Social Media Ideas to Google Sheets

### AI Social Media Idea Agent: video walkthrough

Full walkthrough · 8:07 · with captions

Build an AI agent for BrightPath Marketing that generates social media post ideas and saves them to Google Sheets — chat trigger, AI Agent, system prompt, model, memory, and the Sheets tool. The whole lesson narrated step by step, recorded in Stepthrough’s simulated practice environment.

[Watch it with chapters and the full transcript](https://learn.ynteractive.com/content/n8n-ai-agent-tutorial-google-sheets#watch)

From the free lesson [n8n AI Agent Tutorial: Save Social Media Ideas to Google Sheets](https://learn.ynteractive.com/content/n8n-ai-agent-tutorial-google-sheets)

## Related terms

Plain-English definitions, each with an example from a free lesson.

[CRM](https://learn.ynteractive.com/content/glossary/crm) · [JSON](https://learn.ynteractive.com/content/glossary/json) · [Bearer token](https://learn.ynteractive.com/content/glossary/bearer-token)

[The full AI glossary](https://learn.ynteractive.com/content/glossary)

## Keep reading

- [n8n + ProLevelMax FAQ: Trustpilot Review Themes to Sheets](https://learn.ynteractive.com/content/blog/n8n-prolevelmax-review-digest-faq): How the n8n ProLevelMax review workflow works: the /v1/run request, the JSON body, the key error, the AI themes prompt and the Google Sheets row.
- [n8n Showing Feedback Agent: 9 Mistakes to Avoid](https://learn.ynteractive.com/content/blog/n8n-showing-feedback-agent-mistakes): Mistakes that hurt an n8n showing feedback agent for listing agents, from price advice and buyers' names to mismatched columns and missing memory.
- [n8n Law Firm Time Entry Agent: 9 Mistakes to Avoid](https://learn.ynteractive.com/content/blog/n8n-law-time-entry-agent-mistakes): Mistakes that spoil an n8n time entry agent for lawyers, from letting it round hours to unclear matters, pasted identifiers and the wrong Sheets setup.

[All blog posts](https://learn.ynteractive.com/content/blog) · [All free tutorials](https://learn.ynteractive.com/content)