It is one of the most common problems in mobile phones and tablets. Usually, when you open an app, you will see a black screen for a few seconds and then the app will crash with or without an error message. There are a few ways to fix this problem.
There are a few situations that may cause the load issue in mobile apps.
If you have a login or account-related issue, please check the following steps.
It may take some time for the app company/developer to process the payment and credit to your account. Please be patient for 24-48 hours and see if the amount gets credited to your account. If not, please contact the development company using the contact details given below.
Support Website: https://jsdevlog.tistory.com/entry/iOS-%EC%95%B1-%EA%B0%9C%EC%9D%B8%EC%A0%95%EB%B3%B4-%EC%B2%98%EB%A6%AC%EB%B0%A9%EC%B9%A8