Check if sound permissions are allowed and your device isn’t on silent. You can also change ringtone type in settings.
Top up your SMS credits from the Billing section. Once funds are added, refresh the app to update your wallet balance.
That message means the recipient’s carrier is temporarily offline. Retry after a few minutes.
The destination network might block VoIP connections. Try calling another line or contact the recipient via a different method.
The sender may be using unsupported Unicode or emojis. Ask them to resend using plain text to ensure compatibility.
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