What iPad Models will it work with?
Only work for Apple iPad Models 2018 and Later released. It can work with iPad 6th/7th/8th/9th/10th gen, iPad Air 3rd/4th/5th gen, iPad mini 5th/6th gen, iPad Pro 11" 1st/2nd/3rd/4th Gen, iPad Pro 12.9" 3rd/4th/5th/6th Gen.
How to use the iPad Pencil on my iPad?
Just touch the top seconds to turn it on, and then you can use it on your iPad. No need to connect Bluetooth.
What should I do if can't work with my iPad?
Setting iPad as fallow:
Go to Settings > Apple Pencil > Turn off the Apple Pencil.
Settings > Notes > Turn off "Only Draw with Apple Pencil.