I don't always qualify for a survey, but have always gotten credit for the ones that I have done. I did learn to put the age that I will be later this year, they only ask for the birth year so they don't know if you have aged yet. I was denied earlier this year for one because of the age thing, now I know better.
I have gotten better at trying each dayto get a survey, If I do get one great, if I don't thats OK.