I want to buy the Photoshop plan, I am from Bulgaria, and I get the exact same message:
Incorrect billing info
We are unable to approve your transaction at this time.
There are a number of reasons for order failure, among them errors in the payment information, or billing address, or an inaccurate email address. If you have verified your information and are still unable to place your order, please contact Customer Service and order by phone. Call +44 203 0277 764
Tried several times, with different cards and emails, but the result is same. Please assist.