In the past I have paid via direct debit on 4/15 without issues but now TT won't allow me to use the same date for the debit as my filing date so why is this happening?

Be patient. We are currently working on a solution to this issue. I will follow this and update you as soon as we get this solved. Thank You

has there been any solution?

When is this expected to be resolved?

i have same issue.... TT is asking me to put it on 4/16/2019

The following FAQ says turbo tax will take care of it, if there's an issue.

<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/4766563-why-am-i-unable-to-select-4-15-19-for-my-direct-debit-payment-date">https://ttlc.intuit.com/questions/4766563-why-am-i-unable-to-select-4-15-19-for-my-direct-debit-payment-date</a>

So I did what was suggested, changing the date to the 16th, a couple of hours ago. When the IRS comes after us for penalties (and they will) what assurance do we have that TT won't just say it was our fault for putting the wrong date in, when in fact it was TT system's problem?

If you can't select the payment date https://ttlc.intuit.com/replies/7419959