Hi guys, I am using a kangersubox. Interested in getting a IPVD2, so I tested my colleague's. When I plug in my tank , it shows the "Check atomizer" error regardless how tight I screw it to the mod ( ieven took off the tank and rescrew the RBA section). When I plug it to my kanger mod back , it can fire normally. Anyone experienced this NFI whats wrong..zzz D: