The 450 credit one will generally only let you once a week. I believe thats the Ampario long one. others you just need to be lucky on..
I used to go on there as a white person, my home zip code and single.
Now, I go on as a African American, Yes Lation, Or Asian Yes Latino. female sometime and male sometimes differant zip codes I want to say around the southern states. Seems as though the surveys dont Like White People, so I change it up. I have used zip codes from Tupelo MS, Jackson Ms, Memphis Tn, etc and oh yeah my fav Spart Ms, .
You just need to be smarter than that survey. Good Luck, once in awhile no matter what you do that free survey will kick you for a couple of days then let you do another one.
Good Luck