I was using the AnkiWeb version and I can no longer look at my previous decks, add new cards, or search for anything. Everytime I click on them, it keeps loading (the blue star keeps spinning) and after a minute this message appears:
Yep, all – it’s the same for everyone it seems like.
If you can’t wait a bit for an update, you can manually transfer your collection for now – export-import with a COLPKG, and you probably don’t need to include media. See also: Collection Transfer - AnkiMobile Manual