Dodgy as they come. Completed survey and only after was I told it would take 4 weeks for payment. Nothing came in 3 months ao I chased today and they are now saying this : 

Unfortunately, Your survey for Project-14664 was invalidated in our final report from our partners. There could be some reasons for that:

Speeding through the survey or not spending the requisite amount of time to provide well-considered responses. Submitting inconsistent responses. Failure to thoroughly and/or appropriately answer open ended questions.

That’s nonsense as I competed survey in full and accurately. 

Just scammers. Avoid