Unfortunately there is no real help for such issues here, as it is a player‘s forum.
Here is however help on how to contact pixel support:
I had that up to three times in a row on a couple of days, right now it‘s stable (knock on wood).
Do you use apple iOS? There was a recent update simultaneously with the Diggy .559 update and I’m suspicious that the two (and the follow ups .562 and .563) maybe don’t match well…
P.S.: I don’t do polls. You ask, I answer, if I have something to say. That is occasionally the case. 😉