Lot of small design issues on the board, which doesn't make it look super professional, other than that, it's really a great service!
when clicking on a board item, there is a strange transition effect -> video (8seconds): https://imgur.com/1LMMO1Z
When typing in /feedback/add, there is a lag it's really annoying -> video (7 seconds): https://imgur.com/UCHo597
low contrast for the "Category" field in /feedback/add -> image: https://imgur.com/iXbZ3BC
bad design hierarchy in /feedback/add for the "submit" button, it should stand out and be clearly visible! (at the top like it is actually, but also at the bottom) it took me a couple of seconds to find it: image -> https://imgur.com/1BScyCl
I'm sure there is a few other stuff to look out for, but that said the service seems great.