I've released version 2.4.
I made a small change to the !warn chat command that may have been causing some issues with some people. I was never able to replicate the issues people were complaining about, but this might fix it. To update:
1. Shut down your server.
2. Remove the old awarn2 folder.
3. Install the new awarn2 folder
4. Turn on server and enjoy!
Let me know if you're still having issues.
Note: I've tested this version on 2 dedicated servers as well as a listen server and all the features appear to be working 100% for me. Let me know if you have any issues, but make sure you follow the update instructions above first.