notice CP22A no option to pay online??

[Aventura55]

I got a CP22A notice, "We changed your 2020 Form 1040 based on the tentative carryback application,"  that states it can be paid online at IRS.gov/payments. I want to pay it in full. However, there are literally no options to pay CP22A online! There are plenty of other CP forms offered to choose from, such as CP200-, CP2501 or CP3219A, and many more, but no CP22A. What options should I proceed with? 

[VolvoGirl]

I would think choose 1040 tax due for 2020.