Welcome to GPLDL - we are still beta - please report any bugs via the contact form.
Azlan, if I got it right, you are looking for something like this free Email verification plugin for WooCommerce: https://wordpress.org/plugins/woocommerce-email-validation/
Kate, we have introduced a new user level and increased your download limit. Please try and let us know if you have any issues. Once this is tested we may roll it out to other users as well.
Kate & Azlan: First of all: Thanks for your kind words and support for GPLDL. This is highly appreciated! I totally get your point regarding the 100 files/month limit. We will come up with a solution for users who need more than this asap.
Thanks for this info. The problem existed with some plugins but is now fixed.
Frank, thanks for the kind words. Is Cart66 Pro fully licensed under GPL?