Check for avaiable updates doesn't bring up anything?

I have a game on my ipad that I can't update directly from the ipad since I don't have the space. I tried and it tells me to log onto my computer and it will be avialable for download but when I go on my computer and check for available updates I get nothing. I also have another app that's got an update availalble for it and that one doesn't come up either.

Anyone have any idea how to solve this problem?