I've completed surveys, installed apps and not been rewarded points or even gotten the email saying i'd completed the task so i don't have proof to send in, which superpoints asks for. I can't access the task again to see if i'd made a mistake or clicked away accident. Many surveys take awhile to go through, only to find out "you don't qualify" at the "end".
A whole section of superpoints does not work for me and the answer I got from superpoints was that it usually means fraud, but i never committed fraud... so i emailed the company they told me to and never got a response back. Also, the offers you complete or are not interested in can't be hidden from view which makes it difficult to navigate to offers you haven't tried.