1.Click on the top right corner of the App Store
2.Click to log out and re-enter App ID and password.
1.Download TestFlight Click the blue button "TestFlight" above, and download TestFlight in the AppStore according to the following guides.
Use the TestFlight App to help developers test beta apps. Download TestFlight on iPhone, iPad and Apple TV AppStore.View in AppStore
2. Install BitTok Click the "Start Test" button in the image below after download finished.
Join the Beta version
You can start testing if you have already installed TestFlight on the device.Start Testing