How can I delete all I have entered and cancel the tax return process? I have not filed yet and I didn't enter any payment method. I filed tax returns another method

You need to start a new return before you can delete your current return.

To start a new return, select “Start a New Return” from under “My Returns” in the bottom left corner. Once you have started your new return, you can select “View All Returns” from under “My Returns”. Then delete the unwanted return by clicking the small Trash Can next to it or “Delete” under the return’s name.