Greetings and thank you for posting in the Final Fantasy XIV Technical Support Forums.

The issue you are describing may have to do with your system's permissions with regards to FINAL FANTASY XIV. Please try the following troubleshooting steps to see if they may help with the issue:
- Try running FINAL FANTASY XIV as an administrator and then make the setting changes.
- If you are using the Windows OS, sometimes the system will have the program 'OneDrive' running in the background. This program may be overwriting your changes in its attempt to sync your files. Please search for and disable this program if it is running in the background.

Thank you once again for visiting the Final Fantasy XIV Technical Support Forums!