App freezing on level completion

Just purchased this as the ex free version was freezing on level completion ,thinking the paid version might have the issue fixed but was wrong the first batch of levels played no problem until i got close to where i was in the free version then the payed for app started freezing on level completion so now you must close the app restart it press the next button to advance your level ,do not start the trains again or you will have to repeat this process ps i have deleted the free version so its not a multi app version issue.

Gelphedor about Trainyard, v1.66