I just bought a itaste vv v3 yesterday, very new to vaping, but it seems to be having issues. Apparently, according to the instruction manual, the power button led's are supposed to go from green, to yellow, to red, then flashing red as it's dying. Mine, goes from green, to no light at all, red, then flashing red, very quickly once it goes off steady green. Also, when turning it on, it's supposed to flash all the previously stated colors rapidly, but only flashes red, and green. Could I have gotten a faulty unit? Any help is appreciated, thank you.