Vader doesnt Update G7 instead of G11 and Zeta doesnt play over

Hello, my Vader in SWGOH is G11 and has a Zeta(over 18k GM)but in Grand Arena it shows that he is G7, has no Zeta and only 12k GM also when laying the Zeta doesnt work at all. What can I do to use my Vader the way I actually have been grinding to get him to. Its very frustrating as it is my first Zeta. Thanks!