No, you won't be able to deposit Bitcoin at Freebitco by using other chain. They only support BTC deposit on it's native chain.

The bonus progress percentage will decrease for your each faucet claim and WOF spins. You have to buy a lot of tickets or you need to wager pretty good amount to increase the percentage quickly.

Have you checked your FUN tokens transaction history? If you can't find anything there, then send a PM to 'TheQuin' with your Freebitco user id.