I downloaded the form today, but I can not find a similar line as the one you say that I need to change. In my contact-form-admin.php this is what I find:
// optional extra fields
for ($i = 1; $i <= $fsc_gb_update['max_fields']; $i++) {
Edit: I downloaded the new version and now it works great! I am very very grateful that you have done so much work to make this form. It has helped me a lot! 🙂
I have the exact same problem as you. I want to add 20 extra fields, the fields show up, I write in the fields I want and press the “update options” button. I view my form and nothing has changed, and all the 20 extra fields I added are blanked out.. Hope someone has a solution to this problem! 🙂