Do ion token affect agility. I didn't think so but I was told they do. I can't find it in latest faq

They do not. Tractor beam tokens reduce agility by 1 for every token present.

Ion tokens accumulate and cause a ship to have to perform a white 1-straight maneuver the next turn without triggering "reveal your dial" effects, at which point the ion tokens go away. Large base ships require 2 ion tokens to trigger this, while small base ships only require 1 ion token.