"An error on our end" I've tried everything

I've tried clearing the EA cache, I've tried clearing the game caches, I've repaired the game, I've even tried the trick where I rename the Electronic Arts folder and trick it into making a new one and dragging back in my tray and save items and reuploading my mods (non-script, just clothes hair and furniture) and here's the weird part... It seems I can upload a few mods? I was uploading a few at a time, and every time it would work up till a certain point, so of course i remove the last few that seemed to make it bug out, only for it to just... Stop working again? I'm so frustrated I've poured so much time into these sims and I don't want to stop playing.