All pools pays to miners only for new blocks. Btgpool.pro dont pay for sitting on pool. New block - reward to miners. No blocks = no reward for miners.  BTG network provide very small amount of blocks and most of the blocks taken by pool hopers.

Next time think what you mine and check usual luck on all pools. Noone still your coins! Just issue with "no new blocks" thats all. Hard to find new block. Same for ZEC with 500 msol/s network hard to find new block for pools with less then 10 msol/s