Over the last week the game has locked up several times then restarts making me loose my progress. Today i did a high end trade to kayla afterwords the game again locked up and i lost all the level 7 an 8 dragons i merged. I'm lowering my rating from 5 stars to 2 until my loss is recovered. I was going to purchase a higher package but i think ill forgo that purchase till this is corrected by the designers.