I have not tested Kwik3 nor Kwik4 with iOS11 beta.
Kwik depends on Corona SDK and Corona Labs always keeps the SDK updated with iOS updates. Most of the times, you don’t worry if you uses the latest version of Corona SDK or their daily builds, it works fine.
https://forums.coronalabs.com/topic/69342-new-apple-inapp-purchases-in-ios-11/
Are you using In App Purchase in your app? If so, there is an issue of Kwik to use the IAP functions. I am now fixing it for Kwik because there is a change of Corona SDK daily build.