Submitting forms with Wix Studio does not work

Question:
Can anyone please help me to fix a Wix form?

Product:
Wix Studio Editor

What are you trying to achieve:
I would like my form to be submitted, it is a questionnaire for a product selection.

What have you already tried:
I have been trying for 2 days to create the form so that it can be submitted, but I always get the error message that it does not work and that I should try later.

Additional information:
I have like Basic and already a contact form on my site, this works wonderfully, but now I have added a second one and this one does not work at all. The form also contains pictures for the individual products and multiple choice boxes.

If it persists, and giving you an error message that you should try again later, I would contact Customer Care.