Tags enable your flight to be searched easier as well as for flight event tagging.
Remarks are useful pieces of information you want to add to your flight report such as routing information or other general notes.
If FsHub detected the wrong departure airport, you can update it to any within 30nm of your take-off GPS location.
If FsHub detected the wrong arrival airport, you can update it to any within 30nm of your landing GPS location.
Incorrect aircraft designation?
The aircraft livery designer has not correctly set a label for this aircraft
(it's empty), we are therefore unable to "match" it to a designation; you will
need to edit the livery files and set a label or contact the livery designer to
have them correct it.