I don't know for now, what is the problem exactly (because, I haven't this issue, like most of the player), but it seems to be a browser web issue with cookies or save corruption.
Sorry for this issue, I'm working on it, but that will take time to solve it.
Can you try to play with another web application from the start?
Sorry for this issue, I'm working on it, but that will take time to solve it.
Can you try to play with another web application from the start?