L2J Server

Ok, I have installed the latest Nightly server and set it up, got it running, made my account and logged on.
I think I may have the wrong client though. On my first try, I had the game updated to the most recent from the lineage launcher, and it had a very annoying mailbox windows that kept opening, so I found out it was the wrong game version. So I downloaded a 2.3 game client and did not update it. It doesn't have that same problem, but it is still having problems working properly with the server. Can anyone give me a link to the client I should have? Am I not suppose to update it? What version does the Nightly support?

as the nightly windows say, nightly are still supporting Gracia Final 2.3 and not epilogue yet.. strange thing anyway, cuz i had players on my srv using epilogue (even one of our staff members is using it) and he didn't have any problem. Anyway, is that mailbox window from the community board? If yes, did u try to disable the community board?
Let me know asap
Alecossy

not running that version of game with mailbox window problem anymore, srry.
switched to an old Nightly Hellbound server, just installed Hellbound client in hopes that this will be stable.