Help with Google My Business / Google Business Profile authentication

Questions
1

Hi,
I’m stuck with Google My Business / Google Business Profile authentication in Make and I’m not sure what else to check.

I followed all steps exactly from the official guide:
https://apps.make.com/google-my-business

Additionally, I followed the advice about adding the redirect URL from this thread:
https://community.make.com/t/google-my-business-authentication/17353/9

Google confirmed by email that my API access was approved a few days ago.
However, when I try to verify the connection in Make, I still get the following error:

Failed to verify connection 'My Google Custom connection'. Status Code Error: 400
400: redirect_uri_mismatch

I double-checked:

  • OAuth consent screen

  • Authorized redirect URIs

  • Client ID / Client Secret

  • Google Business Profile API enabled

Everything seems to match the documentation.

:backhand_index_pointing_right: Knowing this, what should I do next?
Is there anything missing or something specific that often causes this redirect_uri_mismatch error in Make?

Thanks in advance for any help.