App store says updates available but Pages, Numbers, Keynote updates won't download

The app store usually only gives notice about compatible updates, and my Mac is on Mojave and already has versions 8.2 of Pages, Numbers, and Keynote. I click update all, get the little spinning circles, and then....nothing, back to 'update' being offered but not actually updating.

So.....what might be blocking downloads when I click 'update all' for these apps to update?

I am signed into my AppleID account; my internet connection supported download of microsoft updates earlier today no problem, and Speakeasy shows a little better than average download speed (14 Mbps).