Do you mean $20 give away contest? I didn't follow it because I was sure I couldn't meet the wager required, 200x was too high and beyond my means and the odds were also very small.
Not only you, most people who are seeing the promotion are not gonna to take these.
I took the conclusion from the promotion, basically it's just throwing your KYC-ID to Blackjack.Fun. The first time in my life to see 200x wagering, also with such huge wagering you only can take the win from promotion up to 20$. The rules is clearly they want player losing 99,999999999% from my perspective better not created any promotion if they did not really intend to lose money.
If they really care about the promotion they are spending for promotion, why not just make a normal wagering like 10-50x most common waggering and limit the code can be claim (10-20) user and user can withdraw the money they win at least 100-200$. These rules will at least require a budget of 2000-4000$ but we all know 90% of people are gonna lose and only 10% lucky user.
Perhaps in the end they can get a result 100% player who are claim the code is losing, and they not spending any budget at all.