There was a problem with gmail that caused it to return “address not found” when sent a message.
Because of that, Ankiweb refuses to verify my email and I could no longer sync my progress.
I have since changed to another gmail address and successfully verified with the new address.
However, Ankiweb would not let me change back to the old address, saying that it has failed to receive too many messages (or something like that).
It’s not a big deal and not necessarily your fault, but I would appreciate if I’m allowed to changed back to old email and being able to verify it.