I'm using Skybox on an Oculus Go in connection with a RavPower FileHub DLNA server. When I change the SD card in the RavPower (the cards have different movies and TV shows), the Skybox app shows the correct folders, but when I enter a folder, it starts with the correct filenames, but then quickly replaces some of them with the filenames and thumbnails from the previous SD card. Playing one of these "wrong" filenames plays the file from the current SD card).
It seems as if the Skybox app on Oculus Go is caching the filenames and thumbnails from the DLNA server, but the cache is based on the file ordinal position or something else that doesn't understand that the contents served by the DLNA server might change over time. Even powering down the Oculus and the RAVPower and rebooting both has no effect.
When I connect to the same RAVPower Device from my Fire tablet using VLC, I don't experience this issue. I can freely swap SD cards in the server and easily refresh VLC and it shows the correct files.
Otherwise, I'm really enjoying using this app!