The ‘Planned Route API (MSFS2024 Only)’ function is NOT working?

[hu hu]

I had tried to create a new flight plan using the MS integrated flight plan tool (Both EFB and Flight Planner web).

From the MSFS2024 EFB (Route page), I tried to load from Web, the EFB can get my route correctly, then I  use the SEND button (Tried both 'SEND TO ATC AND AVIONICS' and 'SEND TO AVIONICS'), nothing works, my FMS screen gets nothing. still empty 'init page' and 'F-PLN' page. Nothing happened, 'CPNY F-PLN REQUEST' button not working as well.

Did I miss something or do something wrong? Or can I find some GUIDE somewhere?

I saw version 1.0.11 claims that A350 start to support 'send and receive the MSFS2024 integrated flight plan from the sim FMS and vice versa.'

My iniBuilds A350 is 1.0.12
Tried MSFS 2024 SU2 and MSFS 2024 SU3 Beta (all up to date)