The problem is none of the emulators show up on boot. I looked at another form for this issue and apparently they had their "Parse Gameslists only" option set to on... however I cannot even access that option in the emulation station main menu. The "other settings" tab is completely missing.
That means you're using a very old EmulationStation (and possibly RetroPie) version. Emulators not showing up on boot means also that they're not installed. Looking at the date of the installation document, it's from 2016, so it looks like they're using an old image.
Use the image from retropie.org.uk/download and we can provide support, otherwise ask the provider of the image for help.