Trust me, *DONT* push the edges. You will end up with hurting or broken nails. Also dont just wedge something in there, you could break the screen or glass coating. Just insert a flexible card/ or very thin but sturdy paper into the straight edges. Then after that, slowly wiggle the corners free. Ps. You may send me a thanks for the fact your iPad is now free and also intact. 😂 ❤
You can spray cleaning liquid onto a cloth and wipe, do not spray directly onto the case or trackpad. Microfiber cloths can be used effectively with just water, however non-toxic or chemical cleansers that do not contain bleach can be used. Ensure the case is completely dry before storing.
It is supported with the iPad nine, I would suggest going to a store that sells tech. If they do not have it, in a worst case scenario you can order one from Logitech