Login, password and OTP recovery
Start with the installed app's login or account-recovery screen. Confirm the registered mobile number and country code, wait for the resend timer, and use the newest OTP only. Repeated requests can invalidate earlier codes. If the code does not arrive, check signal, SIM activity, message filtering, and the app's own Help path instead of downloading another APK from a stranger.
A legitimate support process does not need your one-time code to log in for you. Do not paste an OTP into a chat, screen-sharing tool, or web form reached through an unsolicited message. Use a unique password or PIN, keep the device locked, and review active sessions when the app provides that control.