I have not seen anything that makes me think it is an intuit problem.

Two people have control of this.

One is the IRS whom people are losing their minds over having their $$ sit in their accounts longer than they expected.

The other is you, who chose to let your clients believe that you had control over the payment process, so now they call you.

I'm thinking there may be a lot more practitioners who quit with the electronic payments next year, and begin printing out paper vouchers, and putting the responsibilty back on the taxpayer to make their payments.