That is a pain, if you can put up the grief you could drop another disk into one of the boxes and reinstall windows 10 because it’s windows 10 it should pick up your digital license from the microsoft servers so just select I don’t have a license when installing and it will re-register against your hardware once installed.
Or maybe try a windows 10 reset, (that’s if it’s not too much of a pain to restore everything) . Kind of unrelated to this but I’ve resorted to that for issues like yours a few times now.
Before you do that you might just need to force a refresh on the network by doing a ctrl F5 windows is sometimes a bit random about how often it refreshes things.