Windows 10: I can't connect my phone with Your Phone app

Hello! I want to connect my phone to my PC again. This time it is not working. Please help me.

:)

 

Windows Phone users Clubhouse

I think I'll put a list of people's favourite apps in the OP, starting with my own until I get some suggestions, but you can take a look at the Windows Phone app store at the top apps to see what's popular http://www.windowsphone.com/en-us/store

You are both now added, welcome! *Toast :toast:

 

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"Your Phone" won't connect to phone after motherboard replacement

I've had the Your Phone app running for the last few months on my Windows 10 Pro PC, connecting to my LG V20 phone (Android v8). Last week my motherboard failed, so I replaced it and restored my Windows setup to a new SSD while I was at it.
Now the Your Phone app won't connect to my phone - it says: "We can't connect to your phone. Make sure that your PC and phone are connected to the internet".
The name of my phone (V20) is still displayed in the top left corner of the app Window. Both PC and phone are connected to the internet (via the same router). I have tried:
- Uninstalling and re-installing the Android app (and re-adding the necessary app permissions)
- Resetting the Your Phone PC app
The Android app says "Check your PC", and tells me to select "Send notification", but that option isn't available anywhere in the PC app that I can see.
Can anyone advise on how I can get re-connected to my phone?

- - - Updated - - -

...one step forward...one step back...after another re-installation of the Android app I was able to get as far as sending a notification from the PC app, and selected "Allow" when the notification came up on the phone. Now the phone says "Your phone and PC are linked", but the PC app still says "We can't connect to your phone"
????