I've done as much as I can to reduce the ways people feed. By removing team and class base matches and limiting it to 1 IP/HWID.
Monthly Oly won't work out very well. Nobody would ever earn enough tokens to buy anything, and it would be to discouraging for most people to wait an entire month for...
We don't have anything that asks for a password. Maybe your PC software does. Try this client.
https://drive.google.com/file/d/1bNEWn8_XECO_kW1Xdp5aPSlRMuvv-8jY/view?usp=sharing
Are you using our full client? Try this one. Are you using an interface?
https://drive.google.com/file/d/1bNEWn8_XECO_kW1Xdp5aPSlRMuvv-8jY/view?usp=sharing
Epic Raidboss Core has been lvled up to 80. The droplist has been upgraded to what players would expect from a lvl 80 RB.
You will also have a 50% chance to lvl up stage 16 and 17 soul crystals to stage 18.
I don't see any problems like that. if you are using an interface I suggest deleting your client and start over with a clean client.
We have this alternative client plus a small hat patch.
Alternative Client Download | L2Axis - Community
New Hat Patch | L2Axis - Community
I can't think of why you would need to open ports. maybe you can try adding a rule for the .exe in the firewall.
https://supportcenter.lexisnexis.com/app/answers/answer_view/a_id/1081611/~/adding-exceptions-to-the-windows-firewall