I have one new client and the others are returning ones (including my own) and I see the red error next to the Form 1040/1040SR in the Forms in Use list, I click the error and it takes me to the box to check....

Oddly, when I look at Review, I CANNOT get to the error and check the box, the button is greyed out for both new and returning clients, but both have the error next to the 1040/1040SR in the Forms in Use List.

Im not using the SR form at all, Ive got everyone defaulted to the regular 1040...could the SR be a common denominator for your clients that are missing the form?