Log in issues and have to keep logging in

1st question is why do I have to keep logging into my acct or keep connecting my acct to FB.

My MAIN issue however is ever since I’ve gotten my 15 + and use iOS 17 I have NOT been able to successfully retrieve or even save my progress. I get an error when attempting to do so. The ONLY way I have been able to connect to FB is to delete the app and reinstall. That’s not ideal bc I lose all my saved boosters and lives. SMH.
also, if you noticed the two screenshots, they are different. The one that has the X next to connect my account is when I get the error. But whenever it looks like the first screenshot, I can login successfully and no one has been able to fix this yet. HELP!!!!!

Oh and why is my level different on my 2 devices? On my iPhone it’s 6000 yet on my iPad is 4000. Same account.