If you already have an VoicePing account, you can follow these steps to login:
1. Open the VoicePing App, when there is pop up notification request for permission, please tap "Allow".
2. On the next screen, tap the "Login" button.
3. Proceed to tap "Login" button again on the next screen.
4. Input the login credential for your account, then proceed to tap "Sign In" button.
For a clearer guide, please check out this video: