OK, I just did a quick check, and I think I have been credited with 4 surveys in the past 3 or so months. That makes 2 that I completed but never got credit for, and at least 3 that I was not able to complete diue to a problem with the survey itself.
Often I do not qualify based on the survey criteria. DH works in TV, so that cuts out quite a few. I'll keep trying though.
Just did one tonight, and I wrote it down in my little notebook, so I'll see if I get credited!