its against paypals TOS to sell lewd games so i imagine thats why
wait really?, i was able to buy other games without any issue.
Edit: I looked it up, as far as i know that policy only applies in the US.They didn't say anything about germany
paypals policy applies if we use paypal, i used to sell my games directly before they warned me id lose my account if i continued
either way, my game is properly flagged as nsfw, so paypal should automatically get removed as an option