Hi there! I’m really sorry you’re having trouble with the "Can't play this stream" issue while trying to watch videos on Pure Tuber. Let's work together to find a solution.

First, could you please let me know if this issue happens with all videos or just specific ones? Additionally, do you have a stable internet connection and adequate storage space on your device?

Here are some initial troubleshooting steps you can try:

1. Restart the App: Sometimes, just closing the app completely and reopening it can resolve playback issues.

2. Check Your Internet Connection: Make sure your device is connected to the internet. You can try switching between Wi-Fi and mobile data to see if that makes a difference.

3. Clear Cache: Go to your device's Settings > Apps > Pure Tuber > Storage and then tap on "Clear Cache." This can help resolve temporary issues.

4. Free Up Space: If your device storage is low, it can affect video playback. Consider deleting unnecessary apps or files to free up some space.

5. Try Different Videos: Sometimes, certain videos may not play due to restrictions. Try playing a different video to see if the issue persists.

If none of these solutions help, let me know, and we can dig deeper into more advanced troubleshooting. How does that sound?