Unable to purchase Jurassic World: says "Purchase in Progress"

"Sorry, we were unable to complete your purchase. Maybe check your internet connection?" in the background overlayed with transparent "Purchase in Progress\nThis shouldn't take long." The pack is $7.99.

No way to exit except restarting the app.

On an iPad(4) Model number MLMV2LL/A
Build 6472257
SHA: 6c75de4d333599a7a426864d378 — then it cuts off

Branch r/17_ul

Protocol Version: 448