To get back the “Great to see you again!” page, click on “My Returns”, then “View All Tax Returns” under the TurboTax logo on the top left. From there you can start a new return and import info from 2019 if you choose a paid version of TurboTax Online.

If you have TurboTax Live Assist & Review, here is how to talk to a Tax Expert: https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assi...