1. The network on the device side is poor, the delay is very large, the stream cannot be pushed, and it gets stuck there.
2. The phone's performance is not good, when directly connected, the app cannot receive the data pushed from the device side. You can try changing to another phone.
3. If the same phone and the same network work with the Tuya public version but not with other SDK-developed apps, it is likely an SDK resource issue. It is recommended to investigate the app side.