Can’t turn house battery on after using generator

Also, the friendly Rver from next to us who helped me, checked the fuses. He couldn’t find a bad one, but there was a green light blinking when the generator was on. He said he didn’t like that, but also didn’t know what it meant.

I’m by the way on public land by the entrance of capitol reef park - my 5 year old son and me. It’s been an adventure from LA till here. RV people are great folk, that’s for sure!