Arcade wtf?

[Renusek]

I've played in tournament I've got good score. After I lose the game I've got this message: blahblah yuor score was not saved plz?
And tell me why ? ;/. My score was too big or what ?! . Here ss before accepting:

 

[Paxton]

I think it happens sometimes, I think it uses some kind of sessions so you cannot refresh the page.