@TPLusers
Hi,
If the router reboots itself, please log in to the router's web UI, go to Advanced > System Tool > Reboot page, and check whether you have enabled the Reboot Schedule. If so, disable the Reboot Schedule and check if the router works fine.
If this does not help, please confirm the following information for further analysis.
1. How do you confirm the router reboots itself? What changes in the LEDs' status on the router when it's rebooting?
2. How often does the router reboot itself?
3. How many client devices are connected to the router, via Wi-Fi or wired?
4. Is a SIM card inserted into the router to provide an internet connection? Who is the ISP?
Best Regards