We are aware of a purchase issue preventing Paysafecard and some iDeal bank options from completing a purchase in-game. The error reported is that when selecting a banking option, the option does not allow players to proceed to checkout.
If you are experiencing issues when attempting to purchase gems in-game, you can try making your purchase directly from the Guild Wars 2 site.
As a workaround, this issue does not occur in-game when using other payment methods. If possible, try using a different payment method. If you cannot use another payment other than Paysafecard or iDeal, please check back to this post as we will remove it once the issue has been resolved.