I would certainly contact the customer service [1]. Unfortunately, it happens again and again (whether PSU, NAS or anything else) that a product is delivered with an EU plug and without a CH adapter.

I can't tell you for sure whether you can use the monitor power cable, but if the other power cable is whole, it shouldn't be a problem.
If I'm wrong about that, I'm glad for input! :)

[1] https://www.digitec.ch/de...

I also had a German cable in it - I still had a spare lying around, but it's extremely annoying...

I also had a German cable. One call to support and it was conveniently sent home. However, Digitec should slowly adjust this...

it was the same for me! what a pity....

I always go to the digitec branch and slam the German cable on the table without comment. They replace it straight away - but it's still annoying every time. With bequiet! power supplies, always ask for a Swiss cable straight away. You don't even have to look in the box - the last 10 I bought had German cables and the next 10 will also have German cables :)