Hi…,
Welcome.
Make sure you have the latest version of the HondaJet installed.
To eliminate network issues, disable any antivirus and firewall, and connect your PS5 to the internet using a mobile hotspot. If ok, restart the router to reset.
Not sure if relevant, but make sure you are indeed entering the correct login details. Please see Can’t upload flights from Simbrief to PS5 .
Cheers
Ian