Lily watchface stopped displaying and watch stopped step counting etc. until plugged into charger (was already 80% charged)

Two-day old Lily... Activated walking activity and within 5 minutes watch stopped displaying anything despite repeated tapping and wrist gesturing. Could only see watchface display when an alert or notification arrived. Watch stopped tracking steps, etc. Watch only began working again when I plugged the watch into the charger, despite being 80% charged. No steps from one-hour walk registered on watch or in app.

Also, wrist gesturing watchface activation feature only seems to work properly just after charging.

Anybody else experiencing these issues (especially the first one) or is my watch a lemon?