The code is actually working fine. When I looked at the hidden email field that you've added it to I can see that the value is being set correctly. See Screenshot
yes, code its okay but two weeks ago, when user arrives at this page: hidden link user can be the name of the page and company logo.
I think that Contacta con [cust_get_post_title] and [types field="logotipo-de-empresa" item="[wpv-search-term param='contact_id']"] shortcodes are not working correctly.
That we had created the code for the url parameter contact_id . Seeing that the contact_id parameter is missing from the URL then nothing will be displayed for this.
If you want the shortcodes to continue working you will need to go and edit the shortcodes to use "parent_empresa_id" instead of "contact_id"