I'm having a hard time to contact ads networks in order to improve the site revenue that btw is low at the moment.
Do you guys have any suggestion to improve this? I really want to make this game improve.

Thanks!
Zemiaz
A big contribution to this might be because you are hosting the game on a free domain. Have you ever considered paying for a domain/hosting? Ad networks prefer domain authority.
I already considered that, but you have the same "authority". In a paid domain you have the "same" authority over your name. The only aspect is that is a sub-domain but i control it like a paid domain.
But the "barrier" here is the Alexa rank to the majority of them... (At least is what my view of the situation)