The WYSIWYG editor not displaying with repeatable fields. We are not able to add new content or edit the existing content. Just displays the title of the custom field.
I was able to create a copy of your site using the Duplicator plugin.
The problem was actually being caused by the Gutenberg plugin. At this point I would recommend that you disable this plugin as wordpress core itself comes default with the gutentburg editor.
Once this was disabled the field started to show up.
I understand. We use this plugin in addition to the default because it has added options such as a content block. This is used throughout our site so this plugin conflict is an issue we will have resolve.