Same problem here.
Spent one hour with support, I try]ied with her pelnty of things nothing worked. My credit card works.
She told me to retry a few hours later. I did, same problem.
Also she waved (a discount) the paiement for state return. I receive a confirmation email for that.
So normally TT should not ask me to pay for the state return. But after several login/logout, restart TT, this dumb TT still don't know that the paiement is not needed anymore. Really a piece of...
Don't know what I am going to do...
