Hi @Rendered, welcome to the forum.
It’s greyed out because for some reason Coda allowed pulling in the button through the “add linked column” interface, but the formula itself isn’t propagated correctly.
Fix that yourself by going to button settings, then referencing the button from the original row with a formula like [Your looked up row].[Button in that table]
I.E. it’s not a pulled button, but a new, different button. But you can write its action formula to click that original button.