Been a customer for over 15 years, and they have never, ever lost a package. If there's an incident, it's not their fault. Once a package from France was delivered to the wrong warehouse - there's a bunch of them next to each other at their location - and they assisted in the search, contacted DHL, and found it about 6 weeks later!
Another time I didn't notice one of the orders wasn't registered for over 2 months, after contacting the chat support, they literally added it to my locker with photos within 3 minutes - turns out the label was damaged and they couldn't identify who it belonged to, but photographed and stored it safely, for months!