Pear Note is not ready for iOS 11 yet. If you want to continue using Pear Note on iOS, please do not upgrade to iOS 11 yet. I am working on an update to Pear Note for iOS that will work with iOS 11 (as well as work with changes to Dropbox). I had hoped to have it complete by the time iOS 11 launched, but sadly it is taking longer than I had hoped. I hope to have this update ready for release soon, but I cannot say exactly when the update will be ready.
I apologize for any inconvenience this may have caused.
Thanks for the update. Love this app and rely on it for a lot of my work. Just want to say how much I appreciate that it exists.
Thanks for letting us know. I was wandering whether I should stop using Pear Note altogether but will wait a little longer before considering moving on. Keep it up!