Which version of the site are you on? At one point v2 had a problem and you had to get into v3 for that.
Explorer

I'm ver. 3. If I go to explorer set it to my games and start the move order (e4,d6,d4,d5,Nc3) as soon as I say Nc3 it says no games found.

he only plays French as black, and I've been trying lots of variations. I would expect to see all the choices after e4,d6,d4,d5 but I only see one.

I'm looking at Explorer and it only shows one game with you as white with the move order e4 e6 (since you said French I guess that is what you mean and not d4). That is the game against the player you mention.
It won't explore beyond that since there is only one game. It just expects that you will view the game.

Yeah, it just shows the one game. Are you saying you have more than one? Since it is only 1 game, it won't explore farther than that. You just need to view the game.

At least 6 games as 1. e4 e6 2. d4 d5? When I look at your games in Explorer, I only see 1 with e6 by black.
Maybe I'm misunderstanding you on it.

I apologize, looked at the wrong games
I guess it is possible the game imports for Explorer are broken again. Or the only get imported periodically.
You might open a ticket as it may just be bugged again.
https://support.chess.com/customer/portal/emails/new
why doesnt explorer see my games? I have the same position as 2 games ago, but if I set explorer to look at my games it says nothing found! The game I'm playing now has the same move order as the one I won last time I played white. I would like to reference it.