I think this is "working as intended." All the vendors that sell common gear for EC now have them only in odd Mk levels; the even Mk gear is now only available from the dilithium priced vendors (the ones that used to sell for badges). So if you want even Mk gear, you can now only get it in blue/green/purple qualities, and you need dilithium to buy it . . . which would be great if there was any way to get dilithium, but so far nothing I have seen up to Lt 7 or 8 has given any dilithium rewards at all.