Help please

I, foolishly, upgraded to OS5 and now I find myself with problems.
I cannot access the drive (mycloud ex2 Ultra) from my laptop. What do I have to do to have windows access the drive. It must be something very simple that I’m not recognizing. Also, I backed my devise up on a couple of external usb drives but now the they are not recognized.
Please help.

Install all updates for WIn10, check firewall settings, allow lan detection in lan settings, set local net as private

thank you dswv42

thank you vborets