There is no hidden fee, it is open source, everyone can see it and it is only a small amount ($ 1 / month, which is not the fault because it was loaded by third-party software). They removed that hidden fee and all the money has been returned. The miners are also receiving their money.
I feel sorry for this situation because I know that BTG are not scammers. True the rumors that BTG have been stolen in mywalletscam, but they have not been. They have hacked other people's software until they reach mybtgwallet Even if they wanted to return the stolen money, they can not do it because everyone would ask for money ... on the other hand, I understand the people who trust a site and rob them inside that site ... it's a complicated decision, They have been hacked more than 30 times in this week! I'm very sad with all.
There is clear proof of scam. Even if you believe that mybgtwallet was hacked (which I don't) and you believe the massive premining ist ok (which isn't) there is still the behaviour after the chain spilt and the hidden fee in the pools (
https://github.com/BTCGPU/BTCGPU/issues/180)....