Hello,
Unfortunately, for now there are problems with the payment systems and we have to wait for them to be fixed.
We are sorry for this inconvenience, but we cannot influence this situation much, as we don't own any of the systems and have to wait for the supports to fix them.
For now we can offer to you the following options:
-Cryptocurrency. If you're new to this, you can check our detailed guide on how to use it: https://forum.euroaion.com/topic/11212-how-to-buy-cryptocurrency-and-donate-to-the-server/
-Private Paypal (available once a month with a minimum donation of 50eu). If you want to get more information about paypal, please, contact us back.
Thank you for supporting the project and have fun in game!