As per your query, we have reviewed your site and we found that Gallery Categories
A complete section is not getting called in the front end (i.e on your site).
It happens when you disable that particular section, so just check if you have disabled
that section. In order to check, follow the below steps,
Go to Dashboard -> Appearance -> Customize -> Gallery Category Section -> Check if it is enabled or disabled,
If it’s disabled, just enable it and check your site.
If it doesn’t work then we will need to review it, for that we need your site credentials, just make a user for us assign administrator role and send us the username and password along with the URL at [email protected]