ToME: the Tales of Maj'Eyal

My account does but the machine I run the game on can't use the internet.

Nope just the two normal ones.

I'm using a fresh copy of the game with the dlc thrown in. My add on config in game only shows stonewarden, item vaults, dev tools, and ashes, with ashes being set to auto active.
I'm not sure what id500 is

Do you by chance know why my copy wouldnt be showing any of the new classes then? Does it require being online like stonewarden?

Is there a way to pick which os you download the ashes dlc for like there is for the main game? The home scream offers Linux to me at first so I have to manuely grab the windows version on the base game, but I can't find a option to do that for the dlc. Or is it one file work all?