...Including the other questions you've asked: If you have to come here to ask questions that are pretty much on the most basic levels (I mean, "can you chase enemies if they left the board?" Seriously?) Then you are definitely not good enough as a GM to charge actual $$$ no matter what causes you used as excuses. v=3=v
TRPGs are just communications with rules, and all those things you've asked are all essentially daily-level simple negotiations that, depending on the situation, can generally have multiple answers.
But then an "okay" GM should at least have an idea of how to negotiate, not to mention one that charges actual $$$.
And just I don't see you understand how to negotiate, if you're asking these kinds of things, ya'know.
As for ENG online places for games on the written side, I've heard some people said good things about Rolegate... And not so good things about RPol.