EA app repeatedly crashing

Hi,
I've seen a recent similar thread - but issue is slightly different from what author said... My EA app is repeatedly crashing after just a few mins (and subsequently Sims 4 is closing because of app crash). EA app been working fine up until past couple of days - haven't done anything different. Have trawled various threads on here, social media & possible solutions elsewhere online but nothing is working so I can't run any of my games. Have already tried:

• Clear app cache
• Repair app (both via settings menu and also redownload of app that detects it's already installed)
• Repair game files
• Remove CC & mods
• Update app
• App recovery
• Completely uninstall and reinstall

I don't want to play offline (if that was to even help) as then I can't access the anniversary gameplay features. PC all up to date & spec fine - have been playing without issues for so long.  NOTHING is fixing it.

Any other advice greatly appreciated - can't seem to get anywhere with EA. Spent so much money on this game and now can't even play it :(