A number of Apple Watch users are reported to be having issues with the digital crown in their watch turning out to be stuck or unresponsive at times.
Apple just published a full document which has instructions regarding how to deal with this issue:-

Originally Posted by Apple:-
Check for debris and wipe down your Apple Watch

If the Digital Crown gets stuck or won’t move, it might be because of dirt or debris. If you find substances like dust or lotion around the Digital Crown, follow these steps to clean, and repeat as needed:

  1. Turn off your Apple Watch and remove it from the charger.
  2. If you have a leather band, remove it from your Apple Watch.
  3. Hold the Digital Crown under lightly running, warm, fresh water from a faucet for 10 to 15 seconds. Soaps and other cleaning products shouldn’t be used.
  4. Continuously turn and press the Digital Crown as water runs over the small gap between the crown and the housing.
  5. Dry your Apple Watch with a non-abrasive, lint-free cleaning cloth.

 

If you are afraid of water getting into the watch, don’t worry. Remember Apple Watch isn’t waterproof but its surely water resistant.

Divij has been an iOS user ever since it was introduced, and has been trying all the Apple products as they come and go.
He’s the one you need to go to, if you need any information related, to Apple.
He has a simple motto – To help one get the most out of the tech lifestyle.

Divij Satija – who has written posts on Zamkato.