Unable to connect to internet anymore

I've been using broadband modem for years now. the internet works perfectly fine until recently i cannot connect to the internet anymore.

this what my broadband screen looks like. but when i open any apps that uses internet, I can't connect to internet. here a screen capture when i open chrome.

And then I tried to diagnose it but theres only 3 options whether I am connected to ETHERNET, WIFI or OTHERS. Because im using broadband modem so i choose OTHERS but the diagnostic says Click GO BACK BUTTON because the Network Diagnostics only supports diagnosing problems related to Ethernet and Wi-Fi Networks.

What Should I Do? I already paid Internet plan for 1 month.

I need help.. Thank You in Advance