Did you try uninstalling the game completely? I just cleaned out my beta, installed a fresh copy from SideQuest, and it worked as intended. Maybe clean the data and then delete the game, so it's 100% out, then reinstall after that? It has to be an old save issue... unless your Quest is just refusing to save it's data.
Did you give it permissions? If it can't write data, it'll never move past the tunnel. The end of the tunnel saves a file so it knows to move past it. I dunno why it asks for "photo" access, but it needs to write that save to work. The game constantly saves.