All our products have public issue trackers and the best way to notify us about any issues is to post them there. Issue tracker url can be found on a product page.
Also you can write us and we'll take care about issue tracking for you.
All our products have public wikis. Wiki url can be found on a product page.
Thanks for you feedback
We are constantly improving our products and our customers help us to do it faster. Thanks everyone for all your feedbacks!