The internet keeps disconnecting on my AC5400 router. It disconnects 2-3 times in a day and I have to switch off & on the router from the mains to restart the internet. I have checked with my ISP and they say nothing's wrong at their end. I have also checked the settings of my router, especially the timer option wherein a person can set the time when of disconnection. All settings are ok. Also tried doing a factory reset but same issue persists. Can someone please help & guide me on how to solve this problem? It gets very irritating when during my online classes suddenly the internet stops & an orange LED glows on the router.