DIAGNOSIS
Debris is caught in the rotation mechanism, or the internal gears are obstructed. The motor is straining.
FIX
Power off the device. Unplug it. Manually rotate the base through its full 360-degree range by hand. Listen and feel for obstructions. Inspect the thin gap between the rotating top plate and the stationary base for dust, hair, or small objects. Use a can of compressed air to blow out the gap.
IF THAT DIDN'T WORK
The issue may be internal wear. Contact Amazon Support. The rotating base is a core component. If under warranty, they may replace the unit. Do not attempt to open or lubricate the base yourself.
HEADS UP
Place the device on a hard, level surface. Carpet or uneven furniture can bind the rotation mechanism. Ensure nothing like a charging cable is wrapped around or under the base, restricting movement.