Evo Lab Cores

I have started the quests for the new Evo Lab. I have access to the main room with all of the portals. The NPC in the lobby Vendor-C2 is supposed to sell cores for Evo lab. Mine does not have a tab for cores. Do I have to do a certain quest to unlock cores being sold from this npc? If so which quest? Thanks for your help.

dalai

It's a bug.
Gotta wait for it to be fixed.

Similar reports have been reported on the official forums and is a known issue.

From QA:

I have reported this issue so hopefully the CORE tab will return soon.