I build Wordpres websites and (Formidable Pro) plugins so I know the ins and outs of how to code specials for Formidable Pro.
And I am European (Nederlander) with working knowlegde on how to make plugins useable on the European market.
Autosave for Formidable Pro automatically saves your forms. If a user abandones the form, you will see where and why and if you set up the form with steps you will have both the email and the agreement of the visitor and you can learn about your forms.
Collect payments after form submission, by sending customers to the Mollie Gateway page where they can pay with iDeal or another Dutch or Belgian payment system.