Default Skimble 6 months free galaxy gifts offer

I downloaded skimble through galaxy gifts to take advantage of the 6 months offer, signed in with my Samsung account which it said to do. Yet it doesn't say anything about the 6 months free, has anyone figured it out? According to the reviews on the app, many 1 star reviews due to this issue for tab s and g5 users.... I emailed skimble but there has not been a response yet.