No Internet connection

[Ioanna]

Modem has 3 green lights and no internet. Do you know why? How can I fix it ? Do you know phone number of provider ?

[gavs82008]

@Ioanna 

Posting on here means noting when it comes to broadband as support NEVER come on and post on the forum. You need to call the broadband team. See link for number.
https://help.nowtv.com/article/how-to-submit-a-broadband-complaint1

Also you tagged this in the wrong section of the forum, You put it in the streaming stick/box which is NOT the router.