| Error Message | Cause | Solution | | :--- | :--- | :--- | | | You are using a non-Alfa SIM or international roaming. | Connect to a Lebanese Wi-Fi network or use the SIM in the device. | | "Invalid Number" | Typo in the mobile number field. | Ensure you include the prefix (03, 71, 76, 78, 79, 81). | | "Stream buffering" | Weak mobile data signal. | Switch from 4G to 3G or move to a location with better coverage. | | Black screen after login | Outdated browser or missing codec. | Update your mobile OS or switch to the official app. |