Please use the support email address mentioned on the add-on page: feedbro.reader@gmail.com

Please send the URL of the feed you are having problems with so that we can sort out the issue. Front page is the page that opens when you open Feedbro (with the Feedbro logo, main function icons etc.). Note that you won't see this if you have selected "Open all items view at start" in Options.

Known issues link is now also on the Help page.