Have "Attacks & Abilities" been capped at Level 3?

Bearhuskers

I'm at Level 58 and have been hoarding quite a bit of Ability Material Mk I and II but I'm not able to upgrade a few characters past Level 3... the option to upgrade is disabled even though I have more than enough credits. Any ideas?

Qeltar

Bad UI design. Scroll down, there are Tier 3 materials you need.

Bearhuskers

Thank you very much! I thought I was going crazy.