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What worked for me was turning access from within apps. Leave it off. Then remove the ping my watch and add it back. Note that the first time I added it back, it was still gray. Removed it again then added it back again and is now working. Turned access from within apps back on and still working.
Thanks folks. Worked for me too đź‘Ť
 
From another thread, courtesy of @CodeSpyder: Go into Settings > Control Center, turn off "Access Within App" and then turn it back on. Go into your Control Center, delete the Ping control and re-add it to the Control Panel. Mine was grayed out also, doing the above worked for me.
this worked for me as well
 
None of the above solutions worked for me. But when I updated to iOS 18.2 developer beta, the Ping Watch icon was active again and started working.
 
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