To Do keeps asking to sign back in to keep using it

I have a problem on my Android device (Samsung Galaxy S25 Ultra) with To Do app (version 2.143.935.02). It started constantly sending me push notifications "Sign back in to myaccount to keep using To Do". When I tap on it, it stays on the circling thing that indicates that something is loading and then throws me to the default screen and on and on it goes. I already tried to clear the cache, delete the app data, uninstall and reinstall it, but nothing works.

I even tried and logged in through the web version of To Do and it doesn't show my lists and tasks as well. It is also stuck on loading tasks state.

Does anyone have the same issue? Has anyone solved it? I sent the logs to the developers, but I don't whether anyone is trying to solve this.