Illustrator doesn't work [profanity removed by moderator]. I EXPECT MORE FROM ADOBE! Zoom in and out doesn't work, pan doesn't work. See the video and the notice the ruler changes as I pinch in and out but the art doesn't zoom or move. This so ridiculous!
We understand how frustrating it can be to experience technical issues in Illustrator on the iPad, especially in the middle of work. Would you mind updating the OS and the Illustrator app to the latest version and checking if it helps?
Also, kindly check if all of your work is synced online (https://assets.adobe.com/cloud-documents). If yes, try deleting Illustrator, restarting your device, and then reinstalling the app to check if it helps.