Guust

I updated your Location Manager, it was a very old version.
Please check now.
You may also want to update your GDF theme, and add the correct license: https://wpgeodirectory.com/your-account/

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To enable shortcodes in an HTML field, add this code snippet:

add_filter('geodir_tab_show_geodir_XXX','my_enable_shortcodes_on_field',10,2);
function my_enable_shortcodes_on_field($html, $variables_array){
   return apply_filters('the_content', $html);
}

Replace XXX with the HTML variable name of your HTML field.
Keep the HTML field admin only, do NOT give your users access to it, it is a security risk. That is why shortcodes cannot be added to HTML fields your users can edit.

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The documentation is a work in progress at https://wpgeodirectory.com/docs-v2/geodirectory/shortcode-builder/ and there are no real details about shortcodes yet.

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Please post your URL and WP admin details in a private reply and we will have a look at your settings.
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Make sure you write the HTML using the “text” option. WP will strip paragraphs and linebreaks if you switch to visual.
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Have you asked your host to investigate? 500 errors are server errors, can you get them to check?
It looks like something has gone wrong during installation too, because your GD > General page also seems to miss some options.
Please post FTP details too, and let us know what your host has to say.
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Added a code snippet, please check now.
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