The problem is that it is hard to transfer money over the internet.

I just wanted to know what bureaucratic hurdles one has to jump in Germany to even be able to receive donations on your webpage. I don't want to go into the gory details, but just come with something that I say for years very often: The surest way to become a terrorist very fast is to read up into law.

And this is only for being legally able to receive and not about the taxation issues that arise when you concretely receive donations.

Also in countries there are lots of preferred ways on the methods for money transfer. For example in Germany many people don't want to use a credit card and prefer SEPA money transfer/direct debit for paying in the internet.

Yes, of course one could use some fancy cryptocurrency, but the legal/taxation issues remain.