I cannot load any different airport and plane - always the same airport and same aircraft - non ascii windows 10 account name

When I’m creating a new flight plan I’m unable to proceed with it and it opens the previous flight plan. For example if first set a flight from LELL to LEBL, this goes fine. But then if I set a new flight plan from LEIG to LERS it appears LELL to LEBL again. I’ve found an unelegant way to solve his by deleting the previous flight plan on AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\MISSIONS\Custom\CustomFlight
But I’m not sure if there’s another way to do that straight forward or some configuration that I’m missing.

Any help will be deeply appreciate Ü.