Hi Richard! Thanks for reaching out and welcome to the forum!
You don’t mention what simulator or OS you are using, or the version of any of our apps. However, what you are describing sounds related to an issue we had during the release of the telemetry features in Charts 8.29.0, which required an update to Simlink. You can read more in this thread:
If you think that your issue could be related, please make sure that you have the absolutely latest version of Navigraph Simlink installed, and then reinstall the plugins. The last part is absolutely critical, as you can be on the latest version of Simlink and still be running old versions of the plugins.
If you are not using X-Plane or you believe that your issue is different in some other way, let me know and we’ll investigate this further! In this case, the version numbers of the Navigraph Charts and Simlink apps that you have installed would come in handy!
Kind Regards,
Malte