Pixel Watch Incompatible But Listed as Compatible On Your Website

I recently switched services to Xfinity Mobile. I have a pixel phone and a pixel watch. On Xfinity's own website (https://www.xfinity.com/mobile/support/article/how-to-activate-apple-watch) they list the Pixel Watch as compatible, but now that I've switched to the service I'm being told it isn't compatible both in-store and with the tech support over the phone when trying to activate it. Why does your website list this watch as compatible when I'm being told the opposite AFTER I've already spent the money to switch?

Here are clear instructions for a Pixel Watch. Why am I being hit with a bait & switch?