Windows 10: Network not recognised by Phone Link App

Hi,My phone and the Phone Link app stopped communicating out of the blue Samsung S20. Prior to asking:-The most recent versions of Windows 10, Phone Link App for Android, and both the PC and phoneBoth have fast Internet connections and are still connected to the same Wi-Fi network same AP, same IP subnet, and firewall.-After running out of options, I repaired and reset the phone app, unlinked the phone, and repeated the process on the phone in the Windows/Apps& Features/Phone Link app's Advanced settings. Begin from nothing-I checked the "Troubleshooting the Phone Link app" link an

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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:

 

Supported phones for Windows 10 Mobile Insider Preview Mobile

Your list confirms my phone is eligible, Lumia 521. The windows Insider App fails after ~ 15 seconds, restores data and gives me error 80073cf9. I trouble shot this and went thru all the steps mentioned on several websites including MS without any luck. Short of a hard reset, this is where I am now. Suggestions appreciated.

 

Your Phone App - Link to Windows not working

Has anyone found the secret to getting the Your Phone - Link to Windows App working correctly?
Looking at the number of posts in other forums saying they have problems there is clearly a major issue with this App. It's a pity because it used to work quite well before recent Windows updates.
Basically my phone (Samsung A515) will connect to Your Phone on my PC and I can see the headers of Notifications on my PC. If I try to read Messages or access Photos or open Desktop Apps it says I need permissions and asks me to click on a link to send a permission request to my phone. It never arrives. I don't see any permission request. Also it doesn't say what permissions are missing nor how to enable them.
The response from MS is always to ensure that your phone and PC Apps are at the latest version (they are). I suspect there is a major bug in this App, yet others seem to suggest that it does work. Hopelessly confused.
Winver: 21H1 19043 1237.