Changing Listing Image (thumbnail) Size GeoDirectory v2

I’m trying to resize the thumbnail image size on my (geodirectory) GD Location page. Changed the WP Media thumbnail sizes, which they say the settings are going off of. (Settings->Media->Thumbnail). Change it to multiple px sizes, but it never shows any changes on the location page. Tried to add extra CSS to the block, but that did not work either.

Looking to change the image sizes to something bigger.

Additional Info: The current image size seems to be 110px x 71.5px I’m looking to do something like 200px x 150px or 300px x 300px (something bigger).