It's not advised to use the alternate address. It will change from time to time. However, updates will be posted here...
Please contact us - serv@2Do.org - if you had to use the alternate Minecraft address in your launcher. Other server and network problems can be reported to this email address as well. Please describe the problem. Thanks for helping...
NOTE: Use the /server command to view server list an d /server [servername] to switch servers, e.g. /server 2Do to reach the R&D server.