She doesn't have a forum account so she asked me to ask hsfc to help.
Move the Draw a trail block in when iPad is pressed and the follow finger in when iPad is tapped. Also can you post a screenshot of the Follow finger block?
You should replace the "Follow finger" block with a "Set position block". For the x position, scroll to the IPad or Iphone icon and put in "Last touch x". For the y position, put in "Last touch y". The problem with the follow finger block is that it puts that in a repeat forever block.
Take out the "Repeat Forever" in 'Follow Finger'.
When iPad is tapped follow finger.