I have a full subscription to Navigraph, without problem for many months. Today, after downloading a new flight from Simbrief, I could not get the moving map to work. On clicking the triangle, a message was received saying Simlink not connected. When I opened Simlink from the W11 App area it said Simlink was already running.I have tried closing Navigraph Charts and MSFS and reopening, but same problem. May just be a coincidence but there was a W11 update I think last night. Rob (my Simlink version is 1.1.41.1805)
Try restarting your router, disconnect from any VPN, disable antivirus and firewall as a test, check that your Windows time is synced to local real time, and connect to the internet via a mobile hotspot.
If no joy, please upload the latest logs from %appdata%\Navigraph\Simlink\logs\
