Today i buy new domain but when i try to add it on cloudflare i got error

What is the name of the domain?

pinoyflixteleserye.su

What is the error message?

could not run legacy post zone sub request against new zone products: failed to update user subscription: failed to apply object products: You cannot add or modify subscriptions or services until the outstanding balance is paid. You should be able to do so in your Billing page.

I am sorry to hear this happen.

You’ll need to follow these directions here: