Hi @Former-Member, yes, I'm have been having these issues lately too.
1. almost always having to log in any time I come to the site, regardless of checking the 'keep me logged in' button. Using a PC on Windows on Chrome. Seems to be okay now on my tablet.
2. 'unexpected error' problem when trying to reply is happening less than it used to. Not quite sure yet if it's been resolved because I haven't been posting much lately.
3 third newish problem that's already been mentioned to @NikNik, to do with an error on posting images to profile page. Error message comes up saying it's impossible to complete upload because the word 'Lith-ium' is being used in the computer command. I'm not sure if this has been resolved yet either. @Former-Member was having this problem too. Not sure if it's been resolved at her end.
Good idea to revive this thread. At the very least, the first problem is still happening pretty much all the time for me.