This is what I get when attempting to launch Illustrator
Has it ever worked? Did you do anything different? Have you tried restarting the iPad? Checking out of your Adobe CC Account and back in again? Just some basic check list things to start with.
Which iPad OS? If you're on the beta, you have to roll back.
We're sorry to hear that you're having trouble starting up Illustrator on your iPad Pro. Here are some steps you can take to troubleshoot the issue: