Ok, the developers office asked me to ask you to do the following:
Could the customer check / send a screenshot showing he has enabled storage permissions for the app?
And could he also make a backup of the DJapp folder with his original projects, and then completely uninstall the app, restart the tablet, re-install the app. And copy just the DLM files into the DJapp folder which was created as part of the Re-install?
Let us know, thanks.