No longer whitelisted on Minecraft Realm

After setting up Minecraft Realm and successfully logging in and out a couple times before and playing for a few minutes, I find myself no longer white-listed the following day. I can still reset the world, open/close the world, and change the description on my end, but am unable to login or invite other players.

Subscription Info:
Start Date Feb 28,2013 6:11:05 PM
Days left 89
San Antonio location

Minecraft username: wamasi