Updates missing in Mac App Store

Hi,

I'm having a problem with the Mac App Store.

For some apps it's not showing updates even though they are available.

As you can see from this screenshot the App "MoneyMoney" is currently available in version 2.2.15 in the MAS. Note that the Button says "Open".

As you can see here I only have version 2.2.14 on my Mac.

The "Updates" Tab is apart from some unrelated OS updates empty.

I already tried resetting the App Store via the debug menu but that didn't help.

I noticed the same problem with another app (I'm forgetting which now) a few weeks ago. I fixed it then by deleting and re-installing it.

I'm now concerned that I'm possibly missing a lot more updates since I obviously can't rely on the App Store to properly keep them updated.

Does anyone have a suggestion on how to fix this?

Thanks