If the CTA is placed in the wrong place, it makes it difficult for the user to navigate smoothly through the website or application.
So it’s slighly better for the main action to be at the bottom.
With the main CTA higher we have to go back to it while scanning.
If you have any research evidence, that this tip does not work in specific conditions, please share it with us. We will expand the database with that particular case to grow the collective knowledge together.