I assume that you did 1 survey on 5 different survey boxes in the daily section. You are only allowed to get credit on one completed survey per box per 24 hours.
Did you clear your cookies and temp files before you started doing a new survey with each and every survey box/site? (not between surveys on a particular box)
Did you get to the final page of the survey where they thanked you and/or you got a congrads page? If yes, did you hold that page open for at least 10 minutes before you went on to another survey site?
Credits usually come thru in less than 10 minutes, but if you try to rush the process, communications can break down and you won't get credit.
I usually wait with the congrads page open and flip to another tab to check my account page. I do not go on to another survey until I get credit on the last one -- or decide that the credit isn't coming. In the latter case, I take a screen shot of the congrads page, print it up on my PRINT software, add identifing information about when, what, etc about the survey and save it as a jpeg picture. If I don't get credit in 3-5 days, I'll send the jpeg picture to support asking them to check out the status of the survey. (Generally doesn't help, but it lets me tell FC when survey's don't credit.)