How much has been collected so far in the private sale? I like the project and its dev team credentials looks impressive. What is a bit of a concern here is the US is very strict on its compliance and I think they are even exaggerating some cases to persecute crypto. The project can relocate though and focus on other countries market.
Rewards.com is a US based company and already following US standards.
and i think they are already aware of the implication of raising funds thru the use of cryptocurrency.
and for as long as they dont offer security or promised return of investment they are safe and completely legal in the eyes of SEC.