As far as I can tell, Bamboo Paper does not support the Adonis Jot Script - Evernote Edition pen though if you already had one of those for penultimate. I was able to use the Jot Script to write but it's not actually connected to the app like it was in Penultimate. I was not ablate get the app to connect to the pen.
Please... make Version 5.3.1 available for download on the App Store until the issues are resolved... some of us backup our devices on iCloud and there is no way to revert back to a previous version that way (lesson learned...). Thank you