Which part of the site are you trying to reach? You obviously managed to get here, but was it a particular world or the launch page or a the change world/server page?
It's also not a general problem so try clearing your cookies etc as per the standard advice. It's surprising how often it actually works.
Yes when this happened it was fairly brief at all worlds I'm on, firestorm 2, firestorm 6, tiberian 10, world 94, world 59. Getting here was not a problem, accessing the game was. Fortunately it didn't last long but it was very odd to say the least.
They are rebooting the servers that were patched today that are having issues.
About Tiberium Alliances Technical Issues
Having problems running the game or a script? Get help with Command and Conquer: Tiberium Alliances with the community!1,405 PostsLatest Activity: 4 hours ago