I have never tested this. When we do a roll dodge does pressing the block key during the roll dodge animation activate the block? For example, we are performing roll dodge and we are hit by AoE skill, will the block work then? I suspect not but I would like to be sure.
"We are currently investigating connection issues some players are having on the European megaservers. We will update as new information becomes available."
— They always claim they’re “investigating” the causes, but in reality they’re just waiting until the PC EU players go to bed. Once that happens, you can suddenly log in again and they happily mark the issue as Fixed.