MacBook not finding My Passport external backup?
I have been quite happily using My Passport external backup with Time Machine for a couple of years with no issues. Yesterday, I plugged in my device as usual (via USB), but it cannot be located? The lights on the device are flashing as normal, so I thought it was behaving itself, then later received a pop-up message saying (something along the lines of) "back-up could not be completed" and, a little later, another pop-up saying (something along the lines of!) "device not ejected correctly..." as if I had just disconnected the My Passport (although it was still plugged in). I went to Finder to eject it...but the device wasn't listed.
I tried following Troubleshooting advice on Time Machine website, but I really don't understand it (I'm very far from a tech wizard) :
Attempting to remove the My Passport - temporarily - brought up this BTW - the device wasn't connected to the MacBook at the time???)
I assumed that it thought that the disk was still connected, so clicked on 'Remove Disk' thinking I could then connect it again. However, when I tried to reconnect, I then got "Time Machine not configured" and the device still not visible in Finder?
I have tried numerous times to connect and find the backup device (but I actually don't know what I'm doing 🙄)
If someone could help - preferably in ABC123 language - I should be very grateful!
MacBook Pro early 2015 running Catalina vs 10.15.7
MacBook Pro Retina