I've had a reply hold on....
Regarding the food diary:
Interactive surveys, focus groups and studies consisting of several callbacks or parts, are run on a system whereby the reward points have to be manually uploaded; this takes approximately 6-8 weeks starting from the date the survey closes.
Don't worry, if you have completed the survey then the points will be added to your account.
Boo =( I wanted the points for Christmas.
ETA - That was OW in case anyone was completing diaries with anyone else