IRS Installment site down?

I filed my taxes on Tuesday and set up an installment plan with the IRS, even printed out my approval and the monthly pay date. I'm assuming it takes a few days to update to IrS Id Me. But has anyone tried to view or revise your installment plan? The site keeps showing down. It happened a couple hours after I set up my plan. I want to pay more each month if I can. My IRS account shows that I filed my taxes but doesnt show my payment arrangement. Any suggestions?