Question

I have others ipads but only the Ipad pro 9.7" has this problem

Answer 1

Ensure proper connections.

http://support.presonus.com/hc/en-us/articles/210044883-How-do-I-connect-my-iPad-to-the-iOne-or-iTwo-

Check compatibility.

http://support.presonus.com/hc/en-us/articles/212544806-PreSonus-Apple-iOS-10-Compatibility-Statement