if you did a non-filers submission, that was a return for 2019 which blocks filing your normal 1040. The IRS is aware that many taxpayers messed up and is considering coming up with a method to allow taxpayers in this situation to still e-file. When and if the IRS will follow through is unknown at this time. you could extend your return to 10/15/2020 to see if they do but any balance due must be paid by 7/15/2020. If you are due a refund, there's no telling if waiting till the due date and e-filing (if possible) will get your refund any faster then mailing in your return now.
