CadacTrio Power Pak (BayonetCcartridge) and Hose (1m)

Does this come with 3 gas bottles?

I have one of these , i cannot get any gas to come out of it, i have followed the instructions, does anybody have any tips or is it faulty?

What gas do I use with this? Thanks

Does this use standard off the shelf butane/propane canisters used in most camping stoves. Or does it use a different cadac type/shape/size canister?