Translation fail: I am in a chat group for my residential community. Obviously it’s in Chinese but with a translate function. I am not sure this request has been correctly translated ... “Looking for senior 3 rent boy. Contact...”

Sounds a bit naughty to me.

It certainly is in this translation. I don't know about in the US but in the UK a rent boy is a gay male prostitute. (Of course what they really want are boys to rent one of their apartments.)