Have you tried this, and had difficulties, or what?
Lifetime Tip: When you ask for help, and are given suggestions, don’t combatively ask why they take the form they do. (Unless somebody is asking for your credit card details of course).
I have a TP-Link Archer VR600 aka AC1600 which I used with a previous ISP and has features I find useful, like being able to assign different DNS servers (I use PiHole to filter advertisements and tracking sites on my home network, or might want to use 18.104.22.168 for Families to filter adult content and malware). I'm surprised how locked down the NowTV Hub is compared to most ISPs. I guess they want to keep things as simple as possible for support purposes.
Setting it up was very straightforward. Other TP-Link models, particularly older ones, may have different interfaces.
This was a lot simpler than many of the posts and web pages I had seen. You don't need Wireshark or cloning the MAC address of the NowTV Hub.
I'm happy to report that IPv6 works with this router as well!