Can't Add Apps To Apple Watch. Scroll down to see apps that have been installed. Open the watch app on your iphone.
Tap edit to bring up a list of the complications you can install. Settings > general > restrictions. Tap on an app you wish to add to apple watch;
Open the apple watch companion app on your iphone, and scroll down through the my watch section to the app you’re trying to install.
Select the “my watch” tab at the bottom of the screen. On your iphone, go to the watch app. Stay away from the right end of the dock which is reserved for recent apps. Open the watch app on your iphone.