Hello.
I tested the game using a completely different network by connecting my PC to my phone's Wi-Fi hotspot.
With the phone's mobile network, the official server 3812 | EUROPE - DE appeared correctly and I was able to connect to it.
When I use my normal home internet connection, the server does not load correctly and shows 0/0, 0 ms, Server version 0.-.-, Map -, Mission -, and I receive error 0x00010001 when trying to connect.
This confirms that the issue is related to my normal ISP/network or the routing between my ISP and the DayZ official servers.
Please let me know what information you need from me to investigate this further.