WatchOS 2 (beta 5): watchAppInstalled returns false

Question

The Watch App is installed on the watch and I can tap and run it on the Watch, but watchAppInstalled method returns false.

Also, I can only install the Watc

Answer 1

It now works for me, what I did:

Reset and Re-coupled the Apple Watch and added a Passcode to it (what I never did before).

Edit: You can then safely disable the Passcode and it will still work.