Hello sebastian.

Please note that the official support language is English, and we have to use Google Translator to try and understand other languages. Since a lot can be lost in translation, we apologize in advance if we misunderstood some segments of your message, and we also ask you to please translate your future messages to English.

Thank you for your understanding.

I can't say exactly why the form is not the same as in the Customize section until I log in and take a look, so 

Please provide me a temporary WP-admin (administrator) user for your site where this happens, so we could log in and take a look ‘from the inside’ as that’s the most efficient way to see and resolve the issue. 

We do not interfere with any data or anything else except for the plugin (in case that’s a production version of the site), and of course, we do not provide login data to third parties. 

You can write credentials here just check PRIVATE Reply so nobody can see them except us