EPDuffer: Yesterday, I completed a survey with the University of Michigan from the subject survey site.
Do you mean you didn't do it from WGT but from the Ampario site directly? If so, it's unlikely you'll get any credits.
Every survey I've ever done I have been credited immediately.
Are there any UK people out there who have managed to complete an Ampario survey in the last couple of weeks? I have only seen one and completed that one, no others have been available. I wonder if clearing cache/cookies would get me going again? Getting worried I'll run out of credits for balls before I get another survey!