The review team should have flagged any updates that were not compatible during any updates.
A few things come to mind. Recently S2 devices were updated to One UI and that might be a problem.
The other is there is a bug in the Store and if you’ve downloaded a watch it doesn’t appear in the seller brand page portfolio. It is there by search but not by viewing the seller page.
The other thing is that some watch faces had two distributor certificates, Tizen and Samsung and that kept some tizen builds from installing.
If that isn’t any of it we’d need more information and for you to open a support request to investigate.
Samsung Developer Program