1. If the purchased bubble machine is within the warranty period and the quality problem is not caused by your improper use, you can choose to claim compensation from the supermarket or manufacturer.
2. If your POS machine exceeds the warranty futures switch and is damaged due to your operation, then you have no right to claim.
If the switch of the bubble machine is broken, it may be that the battery is in poor contact, the circuit is open and the switch is broken. You can check whether the battery is properly installed and charged, or replace it with a new one. However, if the bubble machine does not bubble, it may be caused by running out of bubble liquid, blocked hose and insufficient motor power. You can also add a proper amount of bubble liquid, clean the hose and check whether the motor works normally.