@artistic_imagination2176 I have an iPad and the Pencil as well as Logitech Crayon too (two ipads!), and I don't seem to have any isuses with either of this. ON the iPad, I would totally clear the Illustrator's cache. I know some may say 'Delete the App,' but just wait.... Go to Settings - General - iPad Storage. Scroll down and tap on Illustrator. Look for options and select Offload App. This clears the app's cache and temporary files while preserving the documents and settings. Tap Reinstall App.
In the web browser, I would also clear my history, cookies & cache of my web browser;; then log-back into your Adobe account on adobe.com, using the exact Adobe ID (email) and password associated with your active subscription. Go to the Files section and check the Syncing status.
Now open Illustrator and see if the crash is resolved.