is 2018 the correct year? did you received two emails. the first would have told you if it was successfully submitted. if so you would have received a second email saying accepted or rejected. if you never got these then you never transmitted the return. your only option is to obtain the 2018 desktop software. contact support as they push you a free copy. then you have to upload the .tax2018 file to complete, print and mail in your return.
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