Good evening, recently, it has often happened to me that the system goes into crush and the app closes after a purchase. Often the purchases are for the purpose of being able to finish a level in order to stay in the running on the battle or not to lose acquired advantages (e.g. super charger). Closing the programme renders everything useless with complete loss of advantages. The system is evidently unable to understand the crash and return something. If the problem continues I will not only stop shopping but probably also stop playing. Thanks
