Have same problem - unable to access Netflix via Tivo box, Smart TV connected via Ethernet and smart TV and IPAD connected via WIFI. Spoke to Virgin customer support who advised they were are aware of issue and were in contact with Netflix. Was advised that resolution could take between 24 hours and 7 days!
I started a separate thread but it's the same as everyone here.
Cross posting about my Virgin Broadband failure to connect on wifi from Virgin's "HUB 3.0" modem and failure to download, or even to stream to my iPad on through my AppleTV box.
In answer to your question, I only have access to Netflix through my Virgin fibre broadband. Normally, I can access Netflix through three devices. My quite new iPad is my designated downloadable device. It has OS 13.2.3 and for at least the last 24 hours (maybe longer) I have neither been able to download nor to stream movies or TV. When I try to download I get "download in progress" message, but it isn't. And when I try to stream, nothing.
A similar story for my domestic TV, which accesses Netflix through a recent AppleTV box. Again, I can't stream Netflix and I just get the spinning wheel.
Oddly, my newish MacBook Air can stream Netflix and that has Catalina OS 10.15.1
My central irritation is not being able to download the iPad and what's more I can't now download from BBC iPlayer either.
The Modem is a "HUB 3.0"
I'm heartily fed up with Virgin and it's OUTRAGEOUS price of £50pm for a fast broadband but with no add ons other than the obligatory unnecessary phone line rental.
Having already posted details about the Netflix issue and still trying different devices and installed Netflix onto a different ipad. After trying to stream about 30 different movies without success discovered that Terminator Genisys is the only stream that has worked on iPad and Apple TV.