Hoi.

Probably you have to translate also those phrases

COM_SPPAGEBUILDER_ADDON_AJAX_CONTACT_EMAIL="Email"
COM_SPPAGEBUILDER_ADDON_AJAX_CONTACT_SUBJECT="Subject"
COM_SPPAGEBUILDER_ADDON_AJAX_CONTACT_MESSAGE="Message"
COM_SPPAGEBUILDER_ADDON_AJAX_CONTACT_PHONE="Phone"
COM_SPPAGEBUILDER_ADDON_AJAX_CONTACT_SEND="Send Message"

As always, use the simplest method in Joomla Admin >> Languages: Overrides

@Paul Frankowski , Thanks i found the "problem" i had it on Dutch, Set to english and works fine. Sometimes it is so simple that you just dont see it.

Thank you

If your site have only English version, indeed that is a solution.