after patch 18.07.2024    ...

Yeah I'm in the same boat right now.  Tried some of the typical solutions, but still locked out.

Same prbm , here. 

Another one here........ Guess it's ignore BDO for a while and play Once Human.

same

into

Folks, it's a worldwide IT and server problem currently.
Airports, newspapers, banks, radio stations are experiencing problems as well.
Read the news (if possible), maybe social media.

If BDO is using a Crowdstrike protection solution, that's what's causing the problem. 

Greetings, Adventurer!

Thank you for contacting our team! I'm [GM] Monet, captain of the Acher Guard Post, at your service.

I understand that you are having trouble accessing our servers, and we sincerely apologize for the inconvenience caused by our emergency maintenance.

This issue has been identified as a global simultaneous failure of a software program currently in use, and our team is currently working to resolve this issue as soon as possible.

We apologize again for the situation and thank you for your understanding.

May the radiance of Kamasylve light your journeys.

Best Regards,
[GM] Monet
Black Desert Support Team