Help, please! I've only had my OSub 80w baby for just under three months and there's something wrong with the battery door. It's like it's not connecting with the batteries properly and showing me a low battery warning half the time when my batteries are freshly charged (bought new batteries thinking my other ones were just worn out, but it's doing the same with them). My warranty is almost up and Smok's authenticating QR code thing doesn't work and I can't get through to them. Does anyone have any solutions to the problem (tightening the screws on the door works for about 3 hours) or has anyone actually been able to get in touch with them about their warranties? Thanks in advance!