Poptropica How To Make Friends I'm On Poptropica, AstroKnights. How Do You Get Through The Blockage In Mordred's Lab?

I'm on Poptropica, AstroKnights. How do you get through the blockage in Mordred's lab? - poptropica how to make friends

Merlin is the owl as my friend () of the mouse. All courses have seen, I say, this should remove the grid, but still there. What am I doing wrong?