Hi Greg, make sure you've updated to the latest official release, as that will fix all known issues with storage access on Android 11 and 12. However, I'm not sure what version of Android that the RG552 is running. Unfortunately there are some devices out there that just will not work to do what LaunchBox needs to be able to do in order to function properly as a frontend. In our experience, the devices that have these issues are lower-end devices that run older versions of Android, and unfortunately there are a lot of those types of devices that just don't implement Android properly.
I don't have access to either an RG552 or an Odin Pro, but for what it's worth, I do have confirmation that this is not an issue on the Odin Pro.