Deck Editor Issues

[visual pond]

https://i.cubityfir.st/UPRnyNMpRp.png

How do I add Ivy as my commander? and it's showing as Vintage on the Deck list on the left hand side?

https://i.cubityfir.st/9FhArm8qZ7.png

I can see how I can move Ivy to Sideboard, but not to Commander

and the deck won't swap off being listed as vintage no matter what I do

https://i.cubityfir.st/vQXSFbpwfm.png

But it's also under the commander tab at the same time

https://i.cubityfir.st/MMMF4WwKXw.png

Okay, i have worked out how to add Ivy as a commander, but the deck is still listed as vintage for some reason