Why won't my Amazfit Band 5 vibrate?

First, confirm whether you've turned on the Do Not Disturb mode, and if so, please turn it off.
If not, please try setting several alarms, and when it's time for the alarm to ring, please confirm whether the band shows a screen on which the alarm rings but the band doesn't vibrate. If that's the case, it will be difficult for us to determine it online. Please send your band back to us for analysis.