How are you guys using the $50 credit on a $300 spend offer?

Also, I’m a little disillusioned with the $200 credit for $2000 spend GGR offer. I spent like $2120 and got only a $100 credit. So something must not have counted and I can’t figure out what. Makes me think sticking to $100/$1000 is safer since hitting $2200/$2300 for GGR is a lot of effort and tracking.