It does seem strange to me that this pool is clearly very popular, as it has a lot of hash power, average fees, yet has no proper support or community around it, its clearly making $$
It can simply be explained. The admin have communication problem and do not trust other humans in general. On the other hand he's the best with the technical part and he's fair so old time XMR miners stayed there.
Ok good stuff.
I have not had any reply from to my email. I see the wallet is still being used.
It says in red No Bots on your website. What actions do you take when you have a bot? what actions will be taken against this thief/hacker ?
To be honest here, you are the one to make claim you find an illegal bot mining on your server.
You took the time to investigate, find the wallet address and contact pool manager.
What are you going to expect ? Unless police call pool manager in order to take down this wallet and associated IP, he has no obligation to believe in your story.
You get hacked and first things you do is calling pool manager with unchecked claim.
So your first step here, is to go to police station, report your hack, let policemen do their job, and they will contact pool owner who will take action on a legal basis.
To know him personnaly (perl), it will not be the first time he will do that.
What trust could he finds to your claim ? You are not RIAA, and he is not Sweden !
and coins still at pool! 
