Welch,
Thanx for the information, i will summarize it here for people who come to this thread.
this way it should be possible to pay without CC, the thing i did wrong was the email address, this is not paypal@geocaching.com but paypal@Groundspeak.com
I hope this helps other people who want to pay from The Netherlands or somewhere else where CC's aren't very common.
Thanx to all for helping me figure this out!