The Runes of Magic servers need to be restarted to fix an calculation error with the healing spells of priests. Downtime should be minimal.
Thank you for your understanding.
Update 10.40am BST / 11:40h CEST
The server's are still down for maintenance and fixing. Our testers have found a bug which can cause players to drop through the ground.
This is being addressed right now.
No ETA yet.