i'm sorry, i'm new to this whole thing so i kinda don't know the answers to these questions, what i do know is the new tank is a brand called "vivid" and it actually says on the box that this tank works only with a battery the same brand as the tank or something like that so i'm just gonna get a new tank or try and switch to a vape mod !!
Whatever you do, don't buy any more Vivid. PLEASE.
Vivid sell two types of tank. One is completely new and won't fit anything at all.
The other (the old one) should work on almost any battery.
They might even sell a special adapter that uses the new system (single-use refills) on old batteries.
I suspect you have the old system, as the tank fits your eGo-T but doesn't work, right?
The reason for that is selling you a bad 50p tank for £4.99.
Vivid are a tobacco company. They do not want people vaping refillable devices, so they can make millions of pounds... and it will cost you a small fortune to use their products. They don't care about compatibility.
Boycott Blu. Boycott Vivid. Don't let tobacco companies win.
(sorry....)