I have a 2015 3-4 tech rank up gem and a general (non 2015) tech 3-4 rank up gem but every time I try to rank up my 5* vision is appears that the only gem I am able to use is the general non-2015. I really don’t want to accidentally use the general gem when I could use the 2015 gem so would be good to get some clarity on this. Screen shot of the rank up screen is below. I’ve tried using the item from the item use screen but every time I go to the champion screen it just shows the non-2015 gem.