Things that break in the middle of the night: Invalid Site Key Error (Captcha 2, Brevo CRM)

We fix small issues that pop up too
Written by
Michael Baker
Published on
17 January 2025

Problem:

Websites and the services that extend your digital presence are a lot like houses in that they require care and maintenance. And that sometimes things just break. It's super frustrating and I've seen it all. In this case the WordPress site owner is getting an "Invalid Site Key Error" from their Google Recaptcha on an existing embedded form on their home page. The kind of thing that can't be ignored despite being a small issue.

Process:

The typical process for troubleshooting this would be: 

1. Gain access to the WordPress website
2. Investigate the form
3. Investigate Recaptcha code

In this case it was determined the site key had somehow either gone missing or the form provider updated their application to make a site key mandatory.

The Fix:

1. Logging into the CRM where the form originates. In this case it was Brevo
2. Find the form in the CRM flow
3. Create a new Google Cloud account for client
4. Generate new Captcha 2 Key
5. Add key to form
6. Re-embed form on the website
7. Test, done.

Captcha 2 Key Missing or Erased
Set up a new Google Cloud Account for client. Generate new Key
Add Key
Error gone!

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