All our users are not able to buy in game goods from our F2P app, Soccer Manager 2015 (356370).

The error we are receiving is error code 104: "IP address has been rate limited" and the message the user is seeing

Oops, sorry!
An error was encountered while processing your request:

An unexpected error occured while authorizing your transaction. Please try again.

Can anyone help or advise please?

Thanks in advance

We are getting the message below when people are trying to make payments:

Oops, sorry!
An error was encountered while processing your request:

An unexpected error occured while authorizing your transaction. Please try again.