Problem that started with trying to share a deck on ANKIWEB

Getting the following message on ANKIWEB.

The page isn’t working
ANKIWEB redirected you too many times
Try deleting cookies.

I’ve done that but I still can’t get into ANKIWEB AND I can’t sink from any of my devices; each popping up with You can only sync one device at a time. All other versions are closed when I get this message.

You appear to have synced successfully today? Is the problem with a different ankiweb account than the email you’re writing from?