@aaaaa12345 most forums require users be registered to contact anyone on the forum. That is an anti spam thing.
If you mean your wishing to contact the software developer @Russ without joining a forum then that is something he can address.
I use to run a forum for my software while in development and required users to use the forum to ask question on it to prevent answering multi simular questions. However I also included a email contact link in the software. Maybe that should be a option @Russ can address as well.