Just upgraded to lifetime last weekend and this is happening to me too. My 3 Fed and 1 rom-KDF can claim their fireworks from ESD and New Romulus (respectively). However, the console in First City isn't active for any of my 3 KDF.
I have been a lifer since beta. I've never had an issue acquiring the fireworks reward before. I haven't played a KDF since they remodeled the First City, and it wasn't an issue back then. Now, with a new character, I can't claim it.