User blog comment:Otakon7/Otakon7's Buddyfight Simulator/@comment-27058750-20160314145147/@comment-2234004-20160314165143

Different browser simply means a browser other then what you use use (if you use Chrome, try using Firefox).

That needs you to install it though, so for the private trick

in FF: File > Open new Private Window

in Chrome: Menu > New Incognito Window

I did apply a small fix to the deck saving, so it might work now anyway.