Hi,
still cannot login.

Just tried:

Thank you, can you please send us your Steam profile link? Also can you try to do a traceroute towards the server IP? https://support.microsoft.com/en-gb/topic/how-to-use-tracert-to-troubleshoot-tcp-ip-problems-in-windows-e643d72b-2f4f-cdd6-09a0-fd2989c7ca8e

Hi,
my profile:
https://steamcommunity.com/profiles/76561198809754483/

Result of TRACERT:

Tracing route to 195.82.158.116 over a maximum of 30 hops

1     3 ms     3 ms     3 ms  kabelbox.local [192.168.0.1]
2    14 ms    10 ms    15 ms  cz-prg50a-rt1.net.vodafone.cz [185.188.184.211]
3     *        *        *     Request timed out.
4     *        *        *     Request timed out.
5     *        *        *     Request timed out.
6    13 ms    13 ms    12 ms  ae29-100-ucr1.pra.cw.net [195.2.12.33]
7     *        *       16 ms  prag-b4-link.ip.twelve99.net [62.115.173.250]
8    17 ms     *        *     ffm-bb2-link.ip.twelve99.net [62.115.124.28]
9    21 ms    36 ms    22 ms  ffm-b11-link.ip.twelve99.net [62.115.124.119]

10 19 ms 19 ms 18 ms link11-ic-372284.ip.twelve99-cust.net [62.115.50.117]
11 * * * Request timed out.
12 * * * Request timed out.
13 18 ms 17 ms 17 ms 195.82.158.116

Trace complete.

Hello again.
Our guess is that either local firewall or some configuration of your modem/network are causing this problem.
What you can try is to turn off Windows Firewall termporarily to see if it blocks the connection or not.

If that will not help, you can try to add exception for DayZ to your modedm configuration - here should be guides for Vodafone modems: https://www.vodafone.cz/pece/internet-data/datova-zarizeni/

But it may be safer for you to contact Vodafone support and ask them for help as changing modem configuration can cut you off the internet in the worst case scenario. (If you accidentally change something you should not)

https://support.microsoft.com/en-us/windows/turn-microsoft-defender-firewall-on-or-off-ec0844f7-aebd-0583-67fe-601ecf5d774f