Our detectives are back with the following intel on this WordPress site
The site is using two themes, one child and one parent. The child theme is based on the parent and often custom to the site. The parent theme is X theme by Themeco .
We could identify 10 plugins (there might be more) - Cornerstone , Smash Balloon Social Post Feed , GiveWP – Donation Plugin and Fundraising Platform , give-form-field-manager , give-recurring , gravityforms , Smash Balloon Social Photo Feed , Page Links To , SVG Support and WooCommerce
Make all of your modifications to X in this child theme.