Apple watch apps doesn’t show icons

If you try to Restart Apple Watch you may solve your problem.

Perhaps the solution posted by lobsterghost1 in App icons generic on watch 8 which is quoted below may be necessary:

"I guess the next step would be to unpair your watch from your iPhone, which will cause a new backup. Then pair it again, which will let you restore your backup back to the phone.

This link explains how to do that --> Unpair and erase your Apple Watch - Apple Support"

Also try to:

1. Restart the paired iPhone
2. Force Apple Watch to restart