"Files App" Hidden Files

I have a user who is looking at the Files App/On My iPhone folder for my app, and the Files App says that the folder contains 4 files. However, when the user taps on the folder for my app, only 1 file is shown. I assume this means that there are 3 "hidden files". I want to find a way for my user to unhide these files, as it is critical for me to help her with her data issue. Some of the files may be .sqlite, .sqlite-wal and/or .sqlite-shm files. Another file may be a random one created by facebook. I thought that having the user install Dropbox on her device would make the files show up, since practically any file can be saved to Dropbox; but that was not the case. What can I do to help the user get all of the files to show in the Files App? I am in desperate need of help on this one.

"Files App" Hidden Files
 
 
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