Yesterday night (UK time) our users (me included!) had several issues connecting to BigDB. However the weird thing is that the players were able to retrieve some data like game settings, while was not possible to retrieve the game save data. These data are stored in different tables. After a couple of hours the problem fixed itself.
Also I noticed that in these cases, PlayerIO never times out! I am not sure if it would be better to time out. Basically the API never calls the callbacks.