Is just the ingame achievement button greyed out or has your save file also lost the iron man symbol? (when you load the game)

I am currently playing a custom nation game (western norse in north america.. so For Odin and First come First serve was planned for this playthrough)

Now the button is also greyed out (I haven't formed anything) but in the loading screen it still tells me that I am in ironman.. So is my playthorugh also dead?