Unfortunately, as long as they're relying on Stripe and PayPal there are 1imitations to what is and isn't allowed: there are plenty of things that US payment processors make hard to deal with.
> Donations to [...] can be paid using: a credit or debit card (Visa, MasterCard, American Express), a Euro bank account (SEPA Direct Debit), or a PayPal account.
Could I send money through my regular European bank without using Stripe to pay on Liberapay? Does anyone know how they've implemented that?
On the creator side, they say:
> We currently support processing payments through Stripe and PayPal.
From that point of view, they could potentially get stuck paying creators operating in what Visa/MasterCard/etc. consider high-risk categories.