Hi everyone, I've some problems with my NotificationExtension. My app with the extension is online for nearly a year and everything works fine. Now I want to share data between the main app and the notification extension, therefore I've added an appgroup as described in the documentation. During the development and local testing, everything works fine like always. Now I'm testing over testflight and I get this error: No Extension available for this bundle Error was encountered trying to find service Extension: error = Error Domain =UNErrorDomain Code=1904 "Unknown application" The extension will not be invoked and the plain notification (as sent from server) will be displayed. The only thing that will fix this error is rebooting the device after installation or update but I think this is not an option for my user base. Anyone here who had the same problem? I'm using Xcode 12.4 and I've tried on different devices with iOS 14.1 and 14.4.