Booking System shortcode

I am using the WP Booking System plugin together with the Enfold theme. WP Booking System does not support WPML, but it allows me to create the booking form in 3 languages. I need to insert a slightly different shortcode in the editor (lang=en, lang=de etc.) per language.

[wpbs id="1" language="nl" title="no" legend="yes" legend_position="side" display="1" year="0" month="0" language="auto" start="1" dropdown="yes" jump="no" history="1" tooltip="1" highlighttoday="no" weeknumbers="no" show_first_available_date="no" form_id="1" form_position="bottom" auto_pending="yes" selection_type="multiple" selection_style="split" minimum_days="0" maximum_days="0" booking_start_day="0" booking_end_day="0" show_date_selection="no"]

So I create a WPML config file in the root folder of my Enfold child theme with the following content:

<wpml-config>
  <shortcodes>
    <shortcode>
      <tag>wpbs</tag>
      <attributes>
        <attribute>id</attribute>
        <attribute>language</attribute>
      </attributes>
    </shortcode>
  </shortcodes>
</wpml-config>

I reopened the page, updated the content, but I can still not change the German and English page through the Advanced Translation editor.
Do you have any clue what I am doing wrong?

PS. I have tried this solution with both a content block and a code block, both don’t give me any result.