Why is my viewer unable to connect with a simulator for my premium account only?

[WanderleiMMA]

The account I am using to ask this question will not connect.  The other account non premium does.  Why is that?

[Amethyst Jetaime]

LL is installing new server code today and restarting sims

[Posted 7:00 AM PST, 20 May 2014] We are currently performing rolling maintenance for regions on the main Second Life server channel. Please refrain from rezzing no copy objects, making inworld L$ transactions and remember to save all builds.