I'm level 52
Chewy and Sidious 5*
Talia and Luminara 4*
Jedi Consular 3*
All of them are level 51
Chewy, Talia, Sidious, and Luminara are level 4 abilities. Jedi consular is level 3 abilities.
I have all the necessary ability mats and money.
But for some unknown reason the upgrade button is greyed out.
Tried restarting the app, no effect