"All offers are provided by external partners. Aeria Games & Entertainment has no direct control over them."
Sadly, this means that quite a few of the offers don't pay out the AP they say they are. You can try contacting the company providing the offer, that sometimes helps. You can also send in a Billing Ticket
and explain your situation, but unless the company providing the offers payed for the AP, Aeria can't give you it. Good luck!