Hey guys
Most of the answer is already in the posts 
Basically, if you play the free spins promotion, and have winnings to transfer, you must make a minimum deposit of $20 to transfer the winnings over to your account.
If you end the free spins promotion and didn’t win any money over the initial $500, you can still take advantage of the sign up bonus of $20 free on your first deposit of $20.
So either way, the player still gets a bonus. Hope that makes sense?
Let me know if i’ve confused the hell out of you guys