The answer to 'surge protection not working' is that there could be several common causes, including a faulty surge protector, a problem with the electrical wiring in your home, or a power surge that exceeded the surge protector's capacity. Symptoms may include lights flickering, electronics malfunctioning, or the surge protector's indicator light not turning on.
If the surge protector is not working, first check that it is properly plugged into a grounded outlet. You can also try plugging in a different device to test the outlet. If the outlet seems to be working, the surge protector itself may need to be replaced. Surge protectors have a limited lifespan and can wear out over time. However, if the issue persists or you're not comfortable troubleshooting it yourself, it's best to call a licensed electrician to diagnose and repair the problem.