WPEX rakeback explanations

[Black winter day]

I know this was probably written a lot of times but i couldn't find it using the search and i didn't find it at their webpage.
When is the rake goes back to the account?
Where can i read in details about the whole arrangement?
Thanks.

[axioma]

if you couldnt find WPEX info by search you should log off the internet right now.

monday.

[Black winter day]

I found a lot of WPEX topics but not one of them was regarding explanations about the rake.