Just today I have been having issues getting campaign missions across multiple games and maps to load while playing solo in customs (taking screenshots). The campaign missions will go to the loading screen, but just sits there. The bar never fills at all.
In customs, the countdown hits zero then just nothing. You can back out of that, at least.
I tried a hard reset, but it’s still happening. It works sometimes, but customs wouldn’t fire up what whatsoever.
EDIT: I waited an hour and then tried all of the things I listed above and they’re working fine now. Maybe it was just a hiccup, but I got really worried there for … well, about an hour.