hi, i have problems with the pencil, it does not write properly, it stops and leave a blank space. could yo hep me ..

First, ensure that the replaceable plastic pencil tip is screwed firmly (but not too tight) into the body of the Apple Pencil; even a slightly loosened tip will cause issues. When correctly positioned, there should be a tiny gap (of about the thickness of a sheet of paper) between the tip and the body of the Pencil.

Next, try a forced restart of your iPad - as this will often resolve an isolated software issue:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

Finally, if you continue to have difficulties, seek assistance from Apple Support. You can contact the Support Team using the Get Support link at top-right of this page. Alternatively, you can initiate and manage your support cases using the excellent Apple Support App. If not already installed on your iPad, the App can be downloaded from the App Store:

https://apps.apple.com/gb/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad and Pencil:

Genius Bar Reservation and Apple Support Options - Apple