I had problems getting mine to pair, and it turns out the process is a little different from the v2.1 unit.
If you have problems, don’t use the ipad’s bluetooth screen. Just make sure bluetooth is enabled, then go into your Jot capable app. As of this writing, that’s sketchbook pro, PDF pen, and Inspire pro. Make sure you have jot touch enabled in the settings. Pushing the “A” (closest to the tip) button should activate.
This didn’t work for me at first, and I discovered that the reason was that I had already had jot support turned on in the past because I had the v2.1 stylus. I had to turn it off and back on again (lol) in order to get the new stylus to pair.