Thank you for clarifying. Normally, you wouldn't need to worry about whether or not the IRS debits your account after the deadline as long as you filed by the deadline and selected 4/18 as your payment date. But since your return says that it is "queued for transmission," you should consider checking your status on 4/18, and if it isn't transmitted or accepted you can pay directly to the IRS, to avoid a penalty.
@chenyang26
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