I would first like you to do this please.
Step 1: Restart your Router, if you already try this, please proceed to step 2
Remove the power cable from the back of your Router for 60 seconds, then plug it back in. After approximately 2 minutes the lights on the Router should settle into a stable pattern.
If restarting your Router didn’t work, go to the next step.
Step 2: Check your Router's internet connection
Check whether your Router’s Internet light is on/blinking. If it is on, you have an internet connection. Go to the next step.
If it is off:
Check that the cable connecting your Router/router to your wall socket equipment is securely plugged in at each end
Restart your Router
Step 3: Check your WiFi connection
If you are connecting to the internet via WiFi, try the following steps.
Check that WiFi is on:
Check your WiFi light. If it’s off, turn your Router’s WiFi button on
Make sure your computer / device also has WiFi turned on
Reset the connection:
Turn your Router and your computer off and leave them off for 60 seconds
Turn both devices back on and allow a few minutes for them to reconnect
Connect via ethernet cable
Use an ethernet cable to connect your computer directly to your Router, then test your internet connection
If you can connect via ethernet, you have identified an issue with your WiFi setup. See your Router user guide for help with your WiFi connection.