Thank you very much Joffm for your suggestions. I think it would be a good idea to get a license to be honest.

To answer you, here are some of my ideas behind the button (maybe my reasoning is wrong):

1. If the participants were overwhelmed with the survey but felt that they still wanted to contribute to the research, they could leave with certainty that they had actually contributed (from a psychological perspective more so).

2. I want the answers to appear as "completed" when I am filtering the answers since many of the surveys that would be incomplete could still be being completed (many participants could still end up changing their answers before they actually submit). Without such button, there would be no way to distinguish between the participants that actually wanted to submit their survey incomplete from those who are still completing. All of this is if I want to do preliminary analyses before closing the survey (which is the case most of the time).

3. From an ethical stance, even if they agree to participant at the beginning, they still push the button at the end which gives us the ultimate permission to use their answers, I want that confirmation if participants want to submit it incomplete. Gives me more arguments/justifications for when I have to defend my methods (committee, publications, etc) if I end up analyzing those incomplete surveys.

That's it. Not the end of the world if not possible, just trying my best

Thank you again for everything,

Jennifer