I cant login fb messenger on my iwatch 5 series i want to login from iwatch “login from the paired phone “ what can i do can you fix this

Hello bayasgalan33,

Thank you for reaching out in Apple Support Communities. I understand you'd like to sign into the Messenger app on your Apple Watch. I'll be happy to help.

It might help to reinstall the app and see if that helps. Be sure your iPhone and Apple Watch are updated first:

Update your iPhone, iPad, or iPod touch

Update your Apple Watch

You can also contact the app developer for Messenger by following the steps outlined here: How to contact an app developer

Kind regards.