API Connector OAuth: Service Unauthenticated even with Generated Access Token

This is regarding API Connector’s OAuth2 User-Agent Flow.

The authentication was done with debug mode on, and access token was generated, according to my server log below:

The warning message does not go away. Am I missing a step?

Use Oauth when you’re on the ?debug_mode=true version of your app, then it should go away

Thank you for your reply.

I have done so, but the warning still remains. It is as follows:

Bumping this thread in case anyone can help.

Bubble Support has helped me solve the issue. However, the problem could not be replicated on their side, and therefore, I’m unfortunately not able to share the solution.