Yes, please do share a screenshot of what you’re seeing. Where are you trying to save this backup, is it to a NAS? If so - can you provide more information as to the model of the NAS?
For the network share location the proper format is:
\\192.168.1.89\Share Folder Name
So if you are keeping your music on your NAS in the shared folder “MyMusic”, it would be:
\\192.168.1.89\MyMusic
Using an IP address is reliable right now, but if your DHCP server changes the IP address your folder won’t be found. So be sure to set a fixed IP address in your router.
Also, be sure to have Enable SMB service checked under File Services on the Control Panel.
Replace ‘MyHDaudio’ you used before with the shared folder name ‘myHome’.
so \\MesquitaHome\myHome
That is the shared folder you are adding. Then you’ll be able to go to that shared folder and share any individual directory, which I presume is the MyHDaudio.
edit: you may need myHOME as it could very well be case sensitive.