@JHONIVAN Please go through the troubleshooting suggestions to make it connect to the internet: https://www.tp-link.com/support/faq/1556/

@Pseudowire That's great, good job. Please let me know if the issue is resolved. Thank you.

@RandomDude Hello, may I know who is your ISP? Can you describe the network topology in detail? When you tried to access the local server from local devices by the DDNS domains, what is the error...

@Elkrutor Hello, what's the model number of the TP-Link router? Try resetting the router to factory defaults first to restore all the settings, then create your own login password and link it to your...

@Pro4TLZZ If that is the case, we would like to escalate your case to our engineers, the engineering team will investigate to see if it is a concern in the router that can be resolved.

@Althaf66 Hello, I would suggest trying with a different cat 5e or cat 6 cables between the router and the computer, just ensure the cable is good. You can also test the connection speed between the...