I entered that my address is outside of Canada in the My Info section, but when I get to the Warnings/Errors section, it will not recognize my address?

When using TurboTax Free and filing a deemed resident income tax return, you will need to input a Canadian address on the return. When you print it, you can manually change the address to your U.K. address. As a deemed resident, you will need to print and mail your income tax return. Unfortunately, you will not be able to NETFILE.

Thank you for choosing TurboTax.

I wasn’t using the free version. I upgraded. But I took the time to go ahead and change my address with CRA and I was able to complete. Still could not Netfile but solved my own issue.