Huawei Watch Bus Card cannot be issued.

If your Huawei Watch bus card cannot be cancelled, I suggest you try the following steps:

1. Log in to Huawei Health App to make sure that your device is connected to the App normally.

2. On the "Devices" page of Huawei Health App, find your watch device.

3. Click on the watch device to enter the settings page of the watch.

4. On the setting page of the watch, find the "transportation card" option.

5. Click on the watch bus card to be released, and select the "Unbind" option.

6. In the pop-up confirmation box, click "OK" to successfully cancel the bus card of this watch.

If you still can't cancel the watch bus card after trying the above steps, I suggest you contact Huawei customer service for further help.