Hi Waway,
I will recommend that you upgrade to Dynamic User Directory 4.0, especially that you're on DNN 5.6. This is very new and only the latest version is supported on this DNN version.
If you have the Collection 4.0, please log into your Snowcovered account and go to MyDownloads to get all your module updates.
Otherwise, you can upgrade from here and any applicable discounts will show when you add to cart.
http://www.datasprings.com/products/dnn-modulesThanks!