Any Known Issue with Login & Testflight App

I have an app that has been successfully published to Testflight. It does not remember my user logins and every time the app is launched it forces users to login again. This is rather annoying, and I am hoping that it is just in the test version of the app.

Any known issues on this?

I have not experienced this in any of the TestFlight apps that I am part of. I’m happy to give yours a test as well. Feel free to DM me.