An off topic suggestion but good for situation.
We are running a campaign on twitter named #dontforgetyourownapp for people who don't update or release there official app.
Why don't you take on twitter and do a move or two.
Before getting further. Why in hell you were thinking 😔 it would be a good idea to get dp on Lumia 735.
Now lets talk about your problem:-
1. Did you installed this app on your sd card? If yes which card
2. Try soft reset or reinstalling
Maybe solution for this problem is disable the in app purchases. The Thought behind this answer was that till windows phone 8 app can check your carrier but in windows phone 8.1 it can't so maybe....