That's great news that the styrofoam has got your temp stable again :highfive:
I've not incubated blue eggs myself but have heard they can be difficult to candle. A good candler with a good seal to make sure all the light goes into the egg would be advisable.
Hi there :frow
Sorry to hear about your raccoon attack :(
I'm afraid these types of incubators are often wrong with their readings. If you know your thermometer and hygrometer that you added are correct I would go with them and not what the incubator is telling you.