I have a Series 5 paired so all faces should be available, I've even implemented a fallback face but that hasn't helped.
In the end all it does is add a blank face to the watch.
Any suggestions?
Here's what I did:
Follow all the steps as outlined in the video to set up face sharing, UI screens, etc.
Delete the dev build of the app from the device
Install the published App Store version of the app
Open the iOS Watch app and create the watch face you want to share
Email the files to yourself and import them to your project
Build, install and test the dev version of the app.
Tap the Add Watch Face button you created to add the face. The system should now recognize the complications correctly.