Firefox iOS peg̃uarã Tekoha Aty

iOS 15.8.3, FF Version 133.2.

A couple of months ago I started having a bunch of issues with the iOS app simultaneously. First I couldn't get my tabs to sync. Then I signed out and had a hard time signing back in-- it just wouldn't work. Now I am finally signed in, but the app isn't working like it used to. I haven't been able to sync tabs since then now matter how many times I try. It still shows tabs for stuff I read months ago. I can't send tabs from desktop to my phone (but I can send from my phone to desktop with no issues). Finally, the tabs are all weird now-- they are huge (see pic).

I have tried uninstalling and reinstalling 20 or 30 times. I'm considering going back to Safari because the main reason I use Firefox is for phone/desktop connectivity and it just isn't working anymore. Any ideas?

When I pull upwards on the bottom of my screen to scroll between/close apps while in landscape mode (such as watching a video or playing an app), if Firefox is open it will show me a preview of a video that I watched a while ago (and in a private browser, as I do most of my internet usage in the private browser). Why is it doing this? I've since watched other videos, and yet it still shows the preview of a video from several weeks, if not months ago. I'd like it to not do this. It's a bit annoying seeing this glitch (or occurrence, however it may be categorized) so often when I'm long since watched other things. It's only occurring when in landscape mode as well.