When I opened Unicom's Tencent Dawang card, I couldn't record the video, but I followed the steps. What should I do?

When activating Tencent Dawang Card, you need to fill in the last 6 digits of the ID number+the last 7 digits of +ICCID (excluding the last letter), take photos or upload photos of the front and back of the ID card according to the prompts, click' Real-time Detection', jump to the dynamic face recognition video recording page, remember four digits according to the page prompts, read four digits when recording the video, upload it after recording, and you will receive SMS notification if the reserved contact number is placed successfully.