Not all players will qualify for every survey. Certain surveys are looking for a specific group of people and if you do not fall in that group then you won't be eligible. This is stated on both Ampario survey offers. It's right on the offer itself, so it should not come as a surprise that some players will not be eligible for a survey every single time. They do not collect personal information during the qualification process, so you've really got nothing to lose but 5-10 minutes of your time. If you do qualify, great, you earned some quick credits for very little effort. If you don't qualify today, come back and try it again tomorrow.
From Ampario offer:
"Complete the two part qualification process.
If you do not qualify after filling out the qualification survey, you
will not receive credit for this offer.
If you qualify, complete the entire market research survey. Valid
information required.
You can only complete ONE survey per day."