Error while upgrading to pro from free

When I was trying to upgrade to PRO from Free plan
An error was coming that please try again, I tried about 8 times and the error was still there. I even mailed to, but no response came. Please help I am in urgent to upload an app.

Hi @n4rkn7c4nmjpzv, sorry for any issues here. I have followed up with our billing team to see if we can find your email.