I have been having the same problem for MONTHS. The website is clearly broken. 

First of all, your website is extremely slow, which is annoying in and of itself. But your Bill Management is utterly broken. It takes multiple steps to update / add credit card information, but invariably one of those pages will first go to "this is taking longer than expected" and then to "Sorry, this isn’t working right now" with the only option being starting over. I've tried in my browser, I tried in incognito mode, I even tried in your app (yes, I even installed the most recent update of the app before I tried). It's the same everywhere. The problem is clearly on your end. It really should not take me hundreds of extremely slow attempts to update my payment method in hopes maybe one time I get lucky and actually reach the end of that process. It's a waste of my time and nerves. You want to get paid by me. Act like it. It's also not a one-off. I go through this [Edited: "Language"] every time I have to update the credit card info. Your page just never works.  Clearing the browser cache isn't ever going to fix that.