You can change that text easily. Just go to visual form builder->edit on the left side of your admin panel. There you can see the list of fields. Click on each field and change the name of that.
You can change that text easily. Just go to visual form builder->edit on the left side of your admin panel. There you can see the list of fields. At the end you will find SECRET click on that and change the name of that.
visual-form-builder -> All forms -> edit -> there which ever field you have dropped down click on that -> change the name of that particular field. Very simple ??
I think you can translate the label of the form fields one by one in settings using google translator and for error messages translation you can check vfb FAQs.