The Monk skill Ice Strike cannot be used

First of all, all my skill attributes are enough, and the weapon is no problem, and my skill stone can be used and installed, but I can't see him using him in the skill bar in the lower right corner, and after I relearn this skill, I can't use it, as long as I open the skill panel of this skill, this skill stone can't be used, only the skill of ice hammer can't be used, I studied it for three hours, and I found a lot of anchors, and they can't do it, I hope the official can give me an answer I'm really helpless