Some payment methods are not accepted on Monisnap, so make sure you use one of the following payment methods:
If you paid by credit card, check with your bank if your card is enrolled in the 3D-Secure program, mandatory on the Monisnap site.
If your banking problem persists, contact your banking advisor, mentioning the amount of the purchase and our Monisnap site, he or she may be able to resolve the situation.