Netgear D7000 no wifi/internet

Hi there,

I have a Netgear D7000, it is fully up to date but wifi doesn't really work, it sometimes does but then I have no internet. It use to work last week but now it won't work at all.

What do you think it could be? I am with Vodafone and have been having a lot of issues with this and another router at my other place. Has Vodafone stopped internet on 3rd party routers because last week my Asus one stopped connecting to the internet too, seems too much of a coincidence.

Thanks any input would be awesome.

Thanks