Can I poll the Barion servers with GetPaymentState instead of using the callback mechanism (IPN)?
From which IP addresses the Barion Callback is coming?
Can I localize the Barion Smart Gateway to a new language?
How can I use token payment?
Do you support marketplace and sharing economy payment scenarios?
Do you support payment with reservation (escrow)?
Is it possible to decide whether a user has a Barion wallet?
What do I have to know about the insertion of Barion Pixel?