A350 1.0.7 'CPNY F-PLN REQUEST' Button random unaviliable (Gray) when using SimBrief

[hu hu]

When I am using iniBuilds A350 1.0.7 with MSFS 2024.
Start the game and enter free-fly model
Whatever starts from the parking lot (Cold&Dark) or starts from the Runway (Ready to take of)
The 'CPNY F-PLN REQUEST' button will become unavailable (Gray) randomly.
In most of cases, after the engine starts or reads the SimBrief file and waits 1-5 minutes, this button will be from available to unavailable.

Edited Friday at 06:36 AM by hu hu

[hu hu]

Start from runway

Edited Friday at 06:36 AM by hu hu

[hu hu]

Button ‘CPNY F-PLN REQUEST’

[ShambolicKiwi]

I have the exact same issue.  I've read and followed the FAQ, imported simbrief plan sucessfully into the OIS - but the button is greyed out to import to FMS via the CPNY F-PLN REQUEST.  I've also tried cold and dark and runway, same result.  Is there any other requirement to enable this?