To resolve the issue of no channels showing on your mobile DStv Stream app after renewing your Yanga subscription, follow these steps:

1. Check Subscription Status: Ensure that your subscription has been successfully renewed. Log in to your DStv account on the website or app to confirm the subscription under your SC Number 8211499322.

2. App Update: Make sure that your DStv Stream app is updated to the latest version. Go to the app store on your mobile device and check for any available updates.

3. Clear App Cache (for Android devices):
- Go to Settings > Apps > DStv Stream.
- Tap on Storage and then select Clear Cache.

4. Reinstall the App: If clearing the cache does not work, uninstall the DStv Stream app from your device, then reinstall it. This can rectify any issues related to the app’s data.

5. Network Connection: Ensure that you have a stable internet connection. Switch between Wi-Fi and mobile data to see if it resolves the issue.

6. Log Out and Log Back In: Sometimes, logging out of your account within the app and logging back in can refresh your channels. Go to the app's account settings and select 'Log Out’, then log back in with your details.

7. Device Compatibility: Confirm that your device meets the compatibility requirements for the DStv Stream app. Sometimes older devices may have performance issues.

8. Check for Known Issues: It is also worthwhile to check DStv’s official social media channels or forums for any known outages or technical issues affecting multiple users.

9. Contact DStv Support: If none of these steps work, you may need to contact DStv support for further assistance. Provide them with your SC Number and a detailed description of the issue for quicker resolution.

Following these steps should help restore access to your channels on the DStv Stream app. If you require more visual guidance, you can refer to helpful resources on YouTube about troubleshooting DStv channel issues - learn more - learn more - learn more.