I can't buy and download the second chapter in my world story mode. I am the version of ios, which happens every time I buy it.
this is because you downloaded it from a third-party store. If you need to buy it, you need to download it with your ID in the APPSTORE of your mobile phone, and then pay with a credit card bound with your ID. It is very simple to create a new ID. When you click Install in the APPSTORE, you will be prompted. Just follow the new one step by step.