I attached a print of a support page from the Synology website that shows the steps that I took to see the NAS in Explorer.
I have DSM 6.2 so I logged on to the NAS and did the steps as shown with no problem.
Then I enabled the NetBIOS service for Windows 10 and completed steps 2, 3, and 4. Everything started to work properly after that.
I didn't have to re-enable network discovery since it's working properly.
Perhaps I should do that last step since it may have an impact on PM+?
Garry