I have the same problem. My watch app maintains a send queue of files to send to my iOS companion app. In watchOS 10.5, didFinishFileTransfer is never called. Hence my watch app never removes files from the queue and sends the same files repeatedly, even though the files do successfully make it to my iOS companion app. I just released a version of my iOS companion app that ignores transferred files it believes is have been previously received. I never needed to do that when didFinishFileTransfer was called. However, I wonder if I need to find a way to remove the files from my send queue. I could send a list of the files recently received from my iOS app back to my watch app so that my watch app could remove them from the queue. I'm going to wait and hope that Apple fixes this bug in a future release, in which case my watch app will send all the files again and my iOS app will ignore them. However, didFinishFileTransfer will be called and my watch app will remove the files from the queue. I did file a report with the Apple Feedback Assistant.

Here's the answer I received from Apple DTS. As for attribution, there is a REST API call for attribution, though looking at the documentation, I see it is not listed. I've already filed a request to have that added (r. 102144735). I encourage you to file your own feedback about this; feel free to reference the bug I filed when you do so. https://feedbackassistant.apple.com. The call is  https://weatherkit.apple.com/attribution/{locale} which returns JSON, with the attribution images and localized name for WeatherKit in that locale. For example https://weatherkit.apple.com/attribution/en-US returns  {     "logoDark@3x": "/assets/branding/en/Apple_Weather_wht_en_3X_090122.png",     "logoLight@1x": "/assets/branding/en/Apple_Weather_blk_en_1X_090122.png",     "logoDark@2x": "/assets/branding/en/Apple_Weather_wht_en_2X_090122.png",     "logoDark@1x": "/assets/branding/en/Apple_Weather_wht_en_1X_090122.png",     "logoLight@2x": "/assets/branding/en/Apple_Weather_blk_en_2X_090122.png",     "logoLight@3x": "/assets/branding/en/Apple_Weather_blk_en_3X_090122.png",     "logoSquare@2x": "/assets/branding/square-mark@2x.png",     "serviceName": "\uf8ff Weather",     "logoSquare@1x": "/assets/branding/square-mark.png",     "logoSquare@3x": "/assets/branding/square-mark@3x.png" }

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I don't claim to know what all the XML means but the change happens in my watch app schemes when I switch the selected device between the simulator and a real watch. When I select the simulator, BuildableProductRunnable is in effect but when I select a real watch, RemoteRunnable is in effect. It's almost as if the scheme has to change to allow remote debugging when using a real watch. So the state of the scheme files depends on the device selected when you last built in Xcode.