Would you please try the following:
Quit / Force Quit AxCrypt.
Use Finder and go to $HOME/.local/share/AxCrypt and delete all files there. Start AxCrypt. If it does not work, Quit / Force Quit it again, and go back to $HOME/.local/share/AxCrypt and send us the file ReportSnapshot.txt if it exists to support att axcrypt dott net.