Hi.
This is very strange; Pencils usually either work or don't work. A few things I'd like you to do:
* Please first make sure it it's fully charged.
* Then, unpair it from your device (Settings > Bluetooth > Forget This Device) then re-pair it.
* Before you try it again, create a new Pixel Layer (do that with a tap-and-hold on the + icon and choose Pixel Layer), then choose either a Pixel Brush or a Live Brush and try drawing.
Please let me know if this continues.
Sue.
I'm sorry it took me so long to report the results. At the end, it looks that it was a bug from the 13.1 iOS. When the next update came, more brushes started to work and with the latest one, I am able to use almost 80% of the brushes. It was bizarre because the pencil seemed to work with other applications but fresco. But now it is fine.
Thanks for your help!