Having someone develop a copycat of the TIVIT site with the same functions without the permission of the original owner will render your effort useless since your site will be abusing copyright law. So as others may have suggested get in touch with the original owner to get the right license approval either from them directly or from their game providers.
After all, this is what he asks:
Any of you know where i can find a provider ?
If they do not respond to the e-mail, (try as someone already mentioned earlier) as a player, ask the support directly. Normally it shouldn't be a problem to find out who is the games provider. In principle, such information should be generally available to players.
I found one Tivit telegram group about affiliate program, so maybe you can try there:
https://t.me/+delI7QlpE5djYWJi