I'm using this site, finexoo.com, to cash out Bitcoin.
The site isn’t advertised for this purpose (which is a good thing), but once you register an account, you can deposit Bitcoin.
Once deposited, you can spend it with a credit card or withdraw it at ATMs using an anonymous prepaid card.
I’d been looking for a fast system to do this for a while.
Since you got your reward so quickly, you'll probably avoid such things from now on. By the way, It's inappropriate for you to waste time on this forum with your red flags.