I have Craftsy online quilting classes up until about a week ago using my Firefox browser I could view my video classes. Now all I get is a white screen and the loading symbol, which never loads. I have removed my cookies, refreshed my computer. I even restored it back a week, and it worked, but went back to the white screen, after a day. I enjoy having Firefox as my default browser, can you help. I have Google Chrome and can see my videos, but I would rather use Firefox. I believe I have the latest verison. I am not sure about plugins