After creating list and adding keywords to list, you still need to apply list to Forminator form field.
Before apply blacklist to a form field you need enable BSK Blacklist on form settings page.
On the same page, you'll see the tab "Field Settings", there you can apply blacklist / whitelist to Forminator form field.
You may customize the validation message for field, if you leave it blank then the validation message will use what you set in form settings page.
For "Select comparison..." dropdown, it is the way how to check the field value match a field. If includes same or contain( field value contain keyword in list ) with case-insensitive or not.
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