I got through this with the help of apple support!
All I did was: Press and hold the crown and side button at the same time until the screen turns black, release both and wait until the apple logo appears then press and hold the side button until "Erase All Content and Settings" pops up and press this. Allow to erase then delete the apple watch app on your phone and reinstall. IT THEN PAIRED and UPDATED!! YAY!
georgiaoxx
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