I, like many people, have found that Universal Clipboard copy/paste stops working for no reason. I have a iPhone 12 Pro and an M1 MacBook Air.
All Handoff features work (e.g apps from phone showed up in dock) except copy/paste. I'd tried:
- Turning BT and Wireless on and off again
- Turning off/on Handoff on Mac/iPhone
- Turning everything off on both devices, restarting, turning back on again