If you haven't seen this, it might be useful...There's a link in the blacked out area that gets you to Billing, but I understand they're running behind due to Holiday giving and the general resurgence of interest in chess (Beth Harmon, Covid boredom)...
https://support.chess.com/category/135-membership-and-billing
I cant pay with paypal because i get an error everytime i try. I have sent and email but only recieved an auto response. Is it possible to pay manual? i want to upgrade from gold to platina, i have some credit left.