Continually being logged out of Navigraph

I have the problem of continually being logged out of Navigraph on every flight using MSFS and Navigraph Charts v.7.7.1 in Windows 10 which is updated every day. A few friends of mine and I take a daily morning flight and we usually fly DA62x with mod upgrade and Garmin 1000 NXi. But we have also flown C-172s and sometimes other aircraft and the logoff still occurs. I utilize Simlink and sometimes I run charts concurrently on my Windows computer or on my Android tablet with logoffs occurring with both. Logoffs will also occur when I fly by myself and using other aircraft, most recently the Honda Jet. The logoffs occur mostly nearing the destination airport, but can be mid-flight. I have a very fast cable connection.

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I suggest you start from scratch with latest Charts and Simlink . Please disable any Antivirus and Firewall.

Please completely uninstall Simlink and Charts using Windows Programs and Features exactly as under .

If they exist delete directories
c:\Users\username\AppData\Roaming\Navigraph and c:\Program Files\Navigraph

Then download and install latest Simlink and Charts Desktop using the default prompted locations.

Restart computer.