I need the sign the user up option to be able to use the email to generate payment for a single transaction using the stripe plugin. The logic of my application is that the user can generate hundreds of registrations if he wants, because it is a system that manages student cards, and every year the student must return to enter the same information and renew. But it’s giving me an error because the email already exists in my database. How can I disable this check?
Each account needs to be unique. You cannot override this.
Just have a sub account, and have the main account create sub-accounts.
hmm… but how can i do this? because i need the sign that user up to use the user email in stripe 
I think you’re going to need a professional translation on what your overall goal is. Cause from what I’m seeing you’re trying to allow users to create sub-accounts under a primary account, which I have no experience with on Bubble (lacks particular standards I would recommend).