Xfinity DNS hijack, redirecting to xfinity activation

​Xfinity DNS hijack, redirecting to xfinity activation​

​Hi there! Xfinity won't stop hijacking my DNS and sending me to the "activate your modem" webpage. It's happening on all devices.​

​I know the internet is working because I can ping any IP address and when I activate my VPN the internet works fine. With the VPN off (and on all devices i have) xfinity redirects me to the modem activation page.​

​I bought a new modem from Amazon, but it was DoA. I connected my old modem, which is functional but slow (Netgear CM400) so I can have internet. This when I started getting the redirects/DNS hijacking. Back on my old modem, I've gone through the activation steps 5 times in the xfinity App and it says, "activation successfully", but I'm still getting redirected.​

​I called support and after 2 hours on the phone they told me to buy a new modem. I knew this wasn't going to work but I did anyway. I checked the list of compatible modems and bought a Netgear CM700 locally.​

​With this new modem, I connected, went through the activation steps, the app reports my CM700 is working, but I'm still getting redirected. How can I get xfinity to stop redirecting my already activated modem?​

​Yes, it effects all devices.​
​Yes, I've rebooted (PCs and WiFi router)​
​Yes, I've factory reset the modem and WiFi router.​
​Yes, I've contacted technical support on the phone.​

​Now, when I connect my VPN, I can use the internet fine. So the modem IS in fact activated. I can ping google and connect my VPN, that's how I'm posting this.​

​Please help!​