Thanks @MinhT1 - that did it (eventually).
The problem was I selected 'yes' to had I got this in 2019 as I had, but this sent Turbo off down the self-employed route.
If I only select earned in 2020 it finally shows the 'intent to earn' question. Once I selected that I did not have intent Turbo was happy to just note the income.
Thanks for pointing me in the right direction.
