Is the order shown as shipped in your account?
If so, there is probably a tracking number in your account.
If not, don't just bash the post office and maybe ask Digitec's customer service what happened to the order.
https://helpcenter.digitec.ch/hc...
Nothing has to be unscrewed. You have a hose connection that is freely accessible, for emptying you only have to pull out a spigot. In my experience, emptying must only be carried out very rarely, and this is also indicated on the unit.
I have not tried DeLonghi, but I am satisfied with the Electrolux in terms of performance, noise and operation. In addition, the exhaust hose is 1.5m long and just reaches my skylight, all the others only have 1.2m.