If changes made to settings of the Intonato24 are not maintained following a power cycle, there may be an issue with the main database files.  Do not Factory Reset- this will not address the issue!  To test, try saving a new Device Backup file from the Settings menu in the JBL Intonato software.  Once saved, check the size of the file.  It should be around 1.2MB.  If less than 1MB/1000KB, this confirms the issue is in the main database files.  If you have a previous Device Backup file that is the correct file size: restore the unit from this backup file.  After restoring the backup, make a quick, noticeable change to the settings then power cycle the unit.  These changes should be retained!  If you do not have a valid Device Backup, reach out to HProTechSupportUSA@harman.com for a copy of a valid backup file.  

Note- your system setup will need to be configured from scratch if you do not have a valid Device backup file for your system.