- Speak to the Greybeards
- Demonstrate your "Unrelenting Force" Shout

I can use the power and see the green blast effect, but the guy keeps whining "Don't be afraid, you won't harm us, use the power" or something like that. I tried different locations of the room, but nothing works, he keep telling me to use the shout, when I've already tried it several times.

Idk how to help try using it on help.

the effect is blue here .....

Your suppose to hit the Greybeard with it...the one you first meet I forget his name at the moment....

double post, sorry

Ok, figured it out guys, thanks for your help!

Attack the greybeard to finish the quest