Hi fjtimes,
Thank you for using the Apple Support Communities! We see you were linked from the article "If you can't pair an Apple Watch with your iPhone". For this issue, you want to ensure you follow the step in the following sections that can help:
Erase Apple Watch without the paired iPhone
If you can't unpair Apple Watch because you don't have its paired iPhone, you can erase the watch.
When you erase Apple Watch instead of unpairing it, the watch is still protected by Activation Lock. Before you can pair Apple Watch again, enter the Apple ID and password that was used to set it up.
1. Open the Settings app on your watch, then tap General > Reset.
2. Tap Erase All Content and Settings, then tap again to confirm.
3. Wait for the watch to unpair.
4. After Apple Watch unpairs completely, you can pair again. You'll need the Apple ID and password that were used to set up the watch.
Reset Apple Watch if the pairing process stalls
If it seems like the pairing process has stalled — for example, the pairing animation remains on the screen for several minutes — resetting your Apple Watch might help:
1. Press and hold the Digital Crown while your Apple Watch is in pairing mode.
2. Tap Reset when it appears on your watch.
3. After your watch resets, you can pair again.
If the issue remains, we recommend that you reach out to Apple Support directly to take a further look. Please reach out here:
Apple Support
Hope this helps!
Have a great day.