Please, help! When I give the remote control, the participant can't click.

[AnaVlas]

I have a licensed version, but it makes me mad, because my students can't click on the shareable screen when I give them the remote control. I have already checked all the settings, the remote control is turned on. I have a button and follow all the instructions, students take the remote control but can't click. Please, help me to find the solution. Maybe somebody faced the same issue and could solve it. 

thanks