Apple Watch Series 2 - Force Touch intermittently not working

Hi

If your Apple Watch no longer responds to touchscreen inputs as expected, then the following steps may help:

If you have not yet done so, then update your iPhone and Apple Watch to the latest software (watchOS 4.1 is not the latest version), starting with your iPhone:

• Update your iPhone, iPad, or iPod touch - Apple Support
• Update your Apple Watch - Apple Support

Remove any screen protector, case or bumper that you may have fitted to your Apple Watch.

Clean your Apple Watch, being sure to follow Apple's cleaning instructions:

• Cleaning your Apple Watch - Apple Support
• Important handling information

Restart (normally) your Apple Watch and iPhone, turning both devices off together, then restarting your iPhone first:

• If, due to the screen issue, you are unable to restart your Apple Watch normally, then it may help to force restart it by following the instructions the support article below.
• Restart your iPhone, iPad, or iPod touch - Apple Support
• Restart your Apple Watch - Apple Support

If the issue persists, next unpair and re-pair your Apple Watch:

• The Watch app on your iPhone takes a backup of your watch automatically when unpairing via the app.
• Initially choose to Restore from Backup during set up (most data and settings will be restored, with some exceptions such as Apple Pay cards and passcode).
• If the issue persists, next try unpairing and setting your Apple Watch up as a new watch.
• Unpair your Apple Watch and iPhone - Apple Support
• Set up your Apple Watch - Apple Support

If the issue then still persists, I suggest that you contact Apple Support (mail-in service may be available, if required), make a Genius Bar reservation or visit an Apple Authorised Service Provider again for assistance:

• US: Apple Watch Service Answer Center - Apple Support
• Elsewhere: Apple - Support