17. Trading of goods that are illegal in the seller's or buyer's country is forbidden. [2]
I do not think that we can count this rule here, since you are selling something digital and therefore the possibility of both the sender and the receiver remain unknown and it is difficult to determine the legal status in it.
In general, I do not think that many people in the beginner buy and sell, especially for illegal digital products, so do not expect to get a lot of orders, even if it is prohibited.
You can benefit from your experience in developing things that people in the forum need.