- Your payment could not be credited since no payment has been registered for this transaction.
- Payment is temporarily unavailable in your area please try again later.
Using the Steam platform you will then need to create an account for Steam and then link the Wakfu account you would like to do purchases with. Keep in mind that once you've made the link, the only way to unlink the account will be through contacting support.
I hope that helps. Steam is not available worldwide, so this option might not work for everyone.