Available Shares won't mount on FS or B810N

Brought my 2 DROBOs out of storage and set them up at home. One FS and one B810N, I have installed the latest firmware on both units and have the latest dashboard. Discovery found both on my network, show good health, good HDs, and shares available. My Win10 desktop shows both DROBOs on the network. When I try mounting the shares, Dashboard is unable to mount them. When I try to manually mount the shares via Windows Explorer, it can’t find the shares. Both of these DROBOs worked fine the last time I used them. Any ideas what I should try next? Both are out of warranty, so support is non-existent. Thanks