Hello @Mouno ,

Welcome to our community.

May I know what the model number of your device is? Please refer to

How to find the model number of your TP-Link device 

How to find the hardware version on a TP-Link device

Here are some steps you can follow to troubleshoot:

1. Check Parental Controls:
• If you have set up parental controls on your router, make sure your TV is not restricted. Remove your TV from any parental control profile if necessary.

2. For Wired Connections:
• If your TV is connected via Ethernet cable, check if the cable is securely connected and not damaged.
• Try using a different Ethernet port on the router and a different cable if possible.
• Ensure the TV is not connected to a port configured for IPTV (if you have set up IPTV on your router).

3. For Wireless Connections:
• Try connecting your TV to the router’s guest network to see if it can access the internet.
• You can also enable a hotspot on your mobile phone and connect your TV to the hotspot. If it still doesn’t work, the issue may be with the TV itself, and you may need to contact the TV manufacturer’s support.

4. Change the DNS Server:
• Sometimes changing the DNS server can help. You can find instructions here: How to Change the DNS servers.

5. Reset the TV:
• Try resetting your TV to its factory default settings and then reconnecting to the Wi-Fi.