Error Code 500 when logging into iCloud
I personally don't have this problem, I'm asking for someone else.
After signing into iCloud I immediately get the error 500. After clicking on devices, I can't see any of my devices associated with my Apple ID. Synchronization with phone and mac isn't working, they don't see each other, tried it with an older iPhone as well, didn't work. Some apps do get synchronized, but some don't.
Any ideas?