Disable image captions

This is a duplicate of what you posted here: https://wpgeodirectory.com/support/topic/listings-design-and-options/

Why show the image name under the images in a grey box and all the dots?

GDV1 did not support title and caption, gdv2 does. You can show it or hide it based on element options.

The slider has an option to show titles, so, you can turn that off:
https://wpgeodirectory.com/docs-v2/integrations/images/#slider-show-title
https://wpgeodirectory.com/docs-v2/integrations/images/#meta

GDV2 works with templates and design elements. As explained in the pages above, you will need to edit the archive item and or detail page templates, to edit the options in the gd_post_images shortcode to remove the option to show the title.

The way that GDV2 works is explained in the docs. Pages and Page tempalates are explained here:
https://wpgeodirectory.com/docs-v2/geodirectory/page-design/

On that page you can read about each of the GDV2 templates.

On this page you can read about options for changing the templates by adding and altering design elements

https://wpgeodirectory.com/docs-v2/geodirectory/personalize/

You can read about all the design elements here:

https://wpgeodirectory.com/docs-v2/geodirectory/design-elements/

This page will explain which templates there are:

https://wpgeodirectory.com/docs-v2/geodirectory/page-design/

you will need to edit the archive item and or detail page templates, to edit the options in the gd_post_images shortcode to remove the option to show the title.

The page and template settings are covered here:

https://wpgeodirectory.com/docs-v2/geodirectory/settings/general/#pages