I refreshed the page because I didn't have any audio, and I'm now back on round 1! I was on round 5, but because of audio issues, I'm back on round 1!
I got to round 5 again, struggled enough to leave it for another session, and lost all audio by the time I got back to it.
I swear, this game should've just let players select the round they want to do. Maybe it could've even had codes that you could enter, like in some retro games, that act as a save system!