Can’t package game that uses mobile renderer for pc

I’m stuck trying to get my game to package to es3.1 for a pc build!

I assumed all I needed to do was check the box in the Rhi selector in project settings, this doesn’t work.

I’ve used the discjam tutorial, but a lot of it looks redundant as there’s already an es3.1 option in settings and I’m getting the game to open in mobile preview using a console command and can’t get it to work!