I want to build… http://app.thunkableclassic.com/?locale=en platform but Thunkable Classic is no longer supported and doesn’t support Android API 29
Moving this #thunkable since it didn’t belong in that other category.
What sort of app are you trying to build?
Is it in the Play Store already? (And if so, can you share a link to that instead?)
It is not possible to convert your Classic project to X.
If you want to build on Thunkable X.
You have to restart from Scratch.
Do you still have access to classic version?