<font color=red>I don't normally export games on the arcade but I do on Kongregate or I use google drive to test them. I'm assuming if it works on those then it should be fine on Arcade</font>
Well, I don't know, but that's wrong.(At least for me)
I have noticed that some games work properly on Dropbox or Google drive, but not on the Arcade. I dot know why this happens.
BTW, sometimes using different browser solves this problem for me. ATM, I cannot play any Arcade games in Chrome, but most games work fine on Firefox. Again don't know why! :D