I am trying to file, but it's saying I can't have a debit date the same as my filing date... if I change my debit date to 4/16... I'm late.

This is a known issue, they are working on currently.

In the meantime, if you need to pay your federal taxes due you can go to the IRS website directly.You will just need to select pay by check for your filing method. You will get a voucher in your return, but do not pay the voucher if you are using the IRS website. 

 https://directpay.irs.gov/directpay/payment?execution=e1s1

https://ttlc.intuit.com/replies/7419959