Crafty 2.0 RC1 had 2 bugs found. These have been patched in the latest 2.0 RC2 release.
You can get the latest file here: https://craftycontrol.com/crafty-releases/
Patched Bugs include:
Historical Data not being recorded
Can’t Connect server version and MOTD has also been patched. You now can specify the server port, and IP in the config section.
Also, download metrics have been turned on on the website.