This FAQ shows how to use the Auto-fill My Return service in TurboTax Online: https://turbotax.community.intuit.ca/community/importing-transfering/help/in-the-online-edition-of-t...

Fantastic thanks, so I can do steps 1-3 but when I click on "GO" the system l"loads" my information but there is no advancing to these steps:

4. On the Name, get a jump start on your tax return step, select Continue

5. On the Let’s import your info step, select Launch CRA site.

You are likely not able to advance further and use the Auto-Fill My Return (AFR) service as CRA is currently shut down for annual maintenance and updates. 

The AFR service will be available on February 18, 2020, from the CRA at which point you can return to the Auto-Fill My Return page in TurboTax to import your tax slips.