Hello @Chris Sun 

Do you have a DSL connection or a Fiber connection?

If you have Fiber which lights are on, off or blinking on the mediaconverter and is the UTP going to the WAN port of your router?

You can also check your T-Mobile thuis account under actuele storingen to see if there is any problem in your area. Also please remove tour address as this is a public community so everyone can see your address.