Is my EA account broken?

First off, some information:

• I play on Steam (PC)
• I have no Mods or CC installed
• I play on the newest version

I have had this issue for a long time now. I am unable to upload anything to the gallery, and my profile does not show up when searching for my EA ID. Additionally, on all my builds it says "created by: none" instead of my username. After taking a closer look at my EA account, I found that under "Game specific identity" there is a name I do not recognise. I am not sure how important that is or what the purpose of that identity is, but I still thought it was weird.

What happens when I try to share something to the gallery?

After I save a build to my library and click on share to gallery, it shows up in my showcase, but it won't show up when searching for it in the gallery. When I try to share another build to the library, nothing happens. It loads for a couple of seconds, and that's it. It won't show up in my showcase either, not even after clicking on add to the showcase. 

What have I tried to fix it?

• Repair the game via Steam
• Delete the whole Sims4 folder under Documents/ElectronicArts/Sims4 and start with a fresh save file

I have no idea what to do anymore. If anybody has an idea, please tell me.