I need to renew a payment plan, and while I can do it online, I need somewhere to upload supplemental documentation because I have no taxable income. I used to be able to this on the site, but within the last week, it suddenly underwent an overhaul in design and now that feature is missing with "plans to redesign in the future". This renewal has a deadline, and if I don't make it, I'm stuck with a large payment I can't make because I have no job.
And they have no email listed that I could use instead. It's just address, phone, and fax.
Edit: It doesn't help that the site actually lists this as a feature you get when you have an account, when it doesn't actually exist yet.