There are two ways to view a gallery. Currently you are using the default template the comes with the plugin, single-maxgallery.php. It is automatically copied to your current theme folder when the plugin is activated. The template may not match the rest of your theme HTML structure and styling. You can edit this file so that if matches your theme. In order to not loose your changes to this file when the theme and/or plugin is updated (1) make a back up copy of single-maxgallery.php and (2) put this line into your wp-config.php file above the line that says ‘That’s all, stop editing! Happy blogging.’
define('PRESERVE_MAXGALLERIA_TEMPLATE', true);
This should keep single-maxgallery.php from being deleted or overwritten.
The other way to display the gallery, which does not involve editing a template file, is by using the short code that is associated with your gallery; you will see the correct shortcode to use when you edit the gallery. Create a new page, insert the shortcode, publish the page and add a link to the page to your menu.
Alan
