Having issues filing my tax return. says that they do not not had any of my tax returns but i filed one last year. can someone help me? thanks.

If it is says that you have never filed a tax return but you have, select “[Your Name] Personal Information” from the “Setting Up” tab. Make sure to answer “NO” to the question “Are you filing an income tax return with the CRA for the first time?” near the bottom of the page. Click on the “Continue” button to save. Then select “Get Started” from the “File” tab to go back to try to file again.