"You are now required to sign in to pay your Xfinity bill" What does this mean?

I received an email stating, "You are now required to sign in to pay your Xfinity bill". I read through it and it is the most ridiculous and inconvenient thing this company can do to me. You see, I have a representative payee that takes care for all of my finances. Which includes bills. They're in charge of paying for everything

So when I received this email, I had panicked. My payee doesn't have access to my credentials. Does this mean I have to login the day my bill is due before my payee is able to pay for it? Since I'm not in control of my finances, I'm not able to pay for it myself. 

Xfinity really hasn't thought through with this new requirement. If I have someone else paying for the bill every month, why would I need to sign into my account before the payment goes through?