I'm now taking a backup, it'll take about half an hour, before i fix this update.
I'll try and reset all egg data in your cloud saves, this might remove the current eggs you are hatching but this way I can more clearly determine if that's the problem.
it could also be that you send too many requests to the cloud save service when opening a lot of eggs. try hatching 1-3 simultaneously and see if that solves anything. this helps me find the problem :)