Annoyingly, a brand new 5mg pen that I ordered from the IQ Doctor seems to be faulty. I actually think it’s empty - there are no air bubbles and no liquid comes out when I prime it. Plus there’s no clicking when I turn the dial. Thankfully I’d ordered 2 and the other one seems fine. Has anyone experienced this? I’m hoping it’s not going to be a battle to get it replaced (preferably) or refunded.