Github App not working

Guys, I need help I’ve tried in different ways and looked for different settings that could be having a problem.

We are integrating a platform into our ecosystem: backstage.o

The service uses Github App based authentication.

I created this application, linked to our org AppID 129055

I also created the app, AppID: 129049 at org

Both are iqual apps, same settings, same permissions.

AppID 129049, works correctly, I can get the repository list perfectly.

AppID 129055 does not work at all. I get this error.

This endpoint requires you to be authenticated.

Please don’t understand what can exist between the 2 apps or orgs.

Are those applications private? Do they have the same permission? What kind of error do you get? What endpoint and authorization type do you use?