How to Prevent 400 Bad Gateway Error Messages

I cannot navigate this website for more than 5 minutes without having to flush my cookies each and every time I use it before Xfinity decides it wants to verify login credentials so many times, it cannot fit all the reverifications inside the URL anymore and crashes the page load attempt (400 Bad Gateway).

Yes I can get around this with flushing my cookies or going Incognito (this will STILL happen here, by the way) but there cannot possibly be a universe where this is considered acceptable as a user experience to have to do this just to access the website, surely? I've attempted this across Chrome and Firefox, as well as Chrome mobile.

I've been having a separate issue (I'll make a separate post for it) but I keep getting hindered by the constant reverification loop the xfinity website insists on checking upon every page load. It's no wonder it crashes after a few minutes of navigation.

Please tell me that in the year 2026 there is a solution in progress to fix this ongoing problem (I've seen topics as far back as 2021 with the exact same problem with zero solution, only bandaids).