@Akhlan
Hi, you mean the two powerline units are paired with each other successfully, but there is no internet access when connected to the powerline extender network, right?
Please make sure one of them is connected to your router via Ethernet cable, if still no internet access, please try the following steps:
1. Connect a computer to your router LAN port via Ethernet cable, turn off WiFi on the computer to check if wired connection to the router works fine or not, if not, contact the router support
2. Disconnect the computer from the router, plug the same Ethernet cable back into the powerline adapter, make sure Ethernet LED on the powerline adapter light up
3. Connect the computer to the powerline extender and check internet again, if still no internet access, please check if the computer has obtained a valid IP address from the router:
How to find IP address on your devices