Stay the course. Don’t touch the settings or unpair it. My wife’s watch took almost a week to activate.
At least u can resubscribe. My own watch still showing I’m subscribed. Xian
You may want to try to update your iPhone iOS to 11.2.6 and your watch OS to 4.2.3 and then see if the "You are already subscribed!" page is updated with the numbershare subscribe page. That happened for me last night, that's why I re-subscribed again. Unlike the fellow bro who had an instant sms, mine is still activating lor.