Apple Watch app won’t install

I just installed the new OmniFocus three for iOS but the Apple Watch app won’t install… It just reaches the end of the circle and stays there and when I try to open the app it crashes.

Any help?

I’m having the same problem. Restarted both devices to no avail. What did help was deleting the Test Flight version of OF from my phone and downloading the App Store version.

(Edited to include solution.)