I have been trying to install joomla-pkg_gantry5_v5.2.18.zip. Thus far it manages to destroy the database on the site. I am not sure if it is compatible with my site
www.shepcenter.org
. I have restored the data from the siteground backup.
Is this a known problem or is the update not compatible with my site?
Unfortunately, I am not aware of this being an known issue. Can you provide us with access to a back up of your site to see what error message displays after updating?