Please see my post “Fixing Connection Problems” for general troubleshooting for connectivity issues.
For the time being, we still might have one last workaround: on my test device (Moto 360 gen 1) I was still able to install the newest version by downgrading the Wear OS app on my phone to an older version, which still supports encapsulated Android Wear components. You will need to uninstall the current version and get the oldest version which can still be installed from APK Mirror (2.10 or 2.14?):
After downgrading WearOS you might need to install my app again. Sometimes a new update to my app can also trigger WearOS to transfer the encapsulated component. I am planning to publish a new Beta version later today, if you don’t succeed with version 9.50, please join the beta test community and soon I will post a newer subversion of v9.51, which will hopefully install on your watch. Please join the beta test to receive 9.51 right away.
You might not need to do anything special, others with older watches have recently reported success just by waiting half a day… I am extremely sorry and ashamed of the mess Google is making of the Android Wear / Wear OS scene 🙁
Please understand I am doing what I can, but this is mostly out of my control at this point.
Thank you for your patience!
Keywords: Sony SW3, Smartwatch 3, Moto 360, ZenWatch, LG G Watch, G Watch R, Watch Urbane, Android Wear 1.5