Hi!
I didn’t work for me neither – but I just discovered the problem in my form. I hope it will help you too!
I created a multi-page form with Gravity forms, including newsletter-subscription with Mailpoet. It seems to be important that the Mailpoet-field is on the last page! If the Mailpoet-field is on any other page, it will lose the entered information. So you have to move it to the last page.
Hope that helps!
MLeser
