Thanks for this - it helps getting as far as “Tap ‘Done’ to continue to Devices.”, but I can’t see to have a ‘Done’ button, how did you configure devices?
In fairness, so far I only attempted the setup as I am about to choose and purchase a thermostat, and wondering if Tado would work before I purchase as I’d prefer it across other options!
edit: found an answer to this here FAQ: Did we lose the ability to add custom smartapps after the app update of June 2021? - #6 by jkp and it worked perfectly! - thanks @jkp 