I literally paid for and downloaded this application today for $16 to discover that the remotely accessed on a network share MP4 files do not appear to work on a Quest 2, but work fine on Samsung Gear VR. The application was free on the Gear VR.
The error I get is a big red X to the left of the file and a file is not supported error. I literally tried every file I have with the same error with every file.
I am considering the option of getting a refund.