I upgraded from P3Dv4.5 to v5.3 a couple of weeks ago but I can’t get moving maps to work. It was working in v4. I installed Simlink and it shows to be installed in my Documents\Prepar3D v5 Add-ons\Navigraph Simlink folder . I’m signed in and I have a flight running in P3Dv5 but Navigraph Simlink Status says “Navigraph Simlink cannot detect a flight in your simulator. Not broadcasting flight data to server.”
I suggest you start from scratch with latest Charts and Simlink . Please disable any Antivirus and Firewall.
In Simlink Plugin Settings uninstall Simlink plugin from your FS , then completely uninstall Simlink and Charts using Windows Programs and Features exactly as under .