Nikoloni

thanks matthew for your help, but this solution didn’t work for me…

But adding the following code to:
wp-content\plugins\visual-form-builder\js\visual-form-builder-validate.js

jQuery(document).ready(function($) {
	$.extend($.validator.messages, {
		required: "Eingabe nötig",
		email: "Bitte eine gültige E-Mail-Adresse eingeben"
	});
});

solved my problem. Thanks for your support!

i’m getting so angry!°!!!!!!!!!!!!!!