Good morning Furhelp,
Thank you for your inquiry. What static data are you trying to change in the FA50?
Have you checked with another vessel in your port to verify the data has not changed? Sometimes the online AIS providers take a while to update the status of class B targets that have not moved their vessel in a while.
I would try to verify with a friend who has AIS in your region to check on their system to see what your vessel status is from their equipment.
Kind Regards,
C-Bass