Bug store gaijin

There is an error occurring in the Gaijin store since the first day of promotions which is an error when purchasing a premium, I want to buy the t80ue1 and no one answers me in support

“The selected payment method returned an unexpected result. If the problem persists, please contact our technical support”

Is anyone having this problem when purchasing premium during the promo?
Sorry everyone, but I’ve been trying to buy this thing since Thursday.
I’ve tried with SafeyPay, Pix and credit card,
but I get the same error.
It didn’t even work with another WT account.