I linked my epic account with potential hackers, am I safe?

I was asked to link my account with TPG who is a gaming group based in north america i think. Another friend since told me they were hackers in Atlas but I don’t know how severe duping is in terms of hacking and breaching security. I wouldn’t want anything weird to go down with my account and essentially I gave out my steam 64 id and linked my epic account and got rejected immediately so I don’t know why I was rejected even, but if they’re hackers is giving them my account link going to make it easier for them to do weird haxor stuff? legit asking for myself not a friend.