Firefox not Working
Firefox, 70.0.1, will load the game but only to the spinning tip ball, then a section opens at the top and states a webpage is slowing down the page. You have two options, "Stop it" which stops the game from loading and "Wait" which closes the section and then reopens in about 20 seconds. So as of right now the game will not completely load on Firefox. This is being run on a Mac Pro.
@Davegman06 Thanks for the feedback. Have you tried to use the google Chorme Browser or the Steam Version of the game?