You have been answered your question about the withdrawal of funds. no withdrawal is possible without a deposit. and it is not a scam. do not drop such expressions. there are site rules that apply to the site. and before insulting the site, first study the rules of the game and the site.
I'm using bitdouble from 2018, the faucet rule updated on sep2020,
I'm not active on bitcointalk that time.
I can fulfill there requirements for withdrawal if they notice the terms before withdrawal.
I loose the fund, because of the bitdouble moderator - proofs attached on scam accusation.