But the genny should be powered from and charge the house battery(s).
Op mentions nothing about the house functions being dead nor checking the house batt charge level.
Always tough to diagnose something you’re not well read at, but start with the basics.
Does the disconnect actually turn off the house batts?
Are the house batts charged?
What else does or doesn’t work right?
Those are the easy things.
But we don’t know if the OP still has a problem since he was a one n done….so no point in replying to him.