Here are presented affiliate programs that have casinos licensed in Malta, Curacao, Guernsey, — in general, those licenses that are ready to accept players from all over the world.
The Curacao license allows for a lot of freedoms, it is easier for players in such casinos to register, they allow the use of cryptocurrencies, but they do not check the casinos themselves well. Most complaints on the internet are exactly about them. Casinos under a Malta license force the player to fill out an entire dossier on themselves at the very beginning, but players stay in it longer, because of their adequacy. But in any case, inviting players to play in these casinos is on the edge of legality (although Malta is currently trying to sue for this right in the EU), and you need to additionally monitor the local laws of the countries from which you are inviting these players.