I keep trying to use the IRS get my payment tool online and I keep messing up my address. It's a very finicky system so you have to input the exact postal verified address that they have on file or it doesn't work. Do it enough times and you get locked out.
Anyways the trick is to go to the UPS address validator page, enter your address, and they will spit out your 'suggested address' that's cleaned up and works with the IRS site! Hope that helps anyone that's been as frustrated as I have been with this site.