If I hear you correctly, yes but only three years are open so you would be able to e-file 2017 for another month or so until the IRS shuts it down next month.
and ex marks the spot where those rocks and anvils hit me.
Just to add to what Anna says, you can and it's limited to the prior 2 years as allowed by the IRS' MeF. And yes, it will cost you unless it was a return that you created before 2020.
Still an AllStar