Arknights Endfield affiliate program available?

Hey all

I've been playing Arknights Endfield game this week, and also seen it being advertised. I like the game, and see potential - so I started thinking that I would like to participate in their affiliate program. But the problem is - can't find the affiliate program. Also can't find it as an offer available through some affiliate networks.

Please advise where to find this offer. Or how to advertise this game as an affiliate.

Also will be happy to hear what other games can be advertised these days thanks!