Hello @rory.mulligan,
Thanks for reaching out!
I’m afraid, it is not possible to use “Date range” because the “Blocked dates” value is a list of dates. If we use the date range type it will throw an error and unfortunately, the plugin will not be able to understand the value of the blocked date. Screenshot by Lightshot
Therefore, I would like to suggest you create a new field for these blocked dates which will be a list of “dates” instead of a date range. Screenshot by Lightshot
Also, you can save these blocked dates in your database as a list using the “selected range as a list” state. Here is an example: Screenshot by Lightshot
Hope it helps! In case I can assist you with any additional information regarding your setup, please let me know.
Best regards,
Gulce