Aerosoft One stores your user data in the following directory for each operating system. Replace {username} in the respective paths below with the username of your PC.
Windows
C:\Users\{username}\AppData\Roaming\Aerosoft One
macOS
/Users/{username}/Library/Application Support/Aerosoft One
Linux
/home/{username}/.config/Aerosoft One
Note that under no circumstances should you add, delete or change data within this folder as this may cause Aerosoft One to stop working.