1. Use 502 drops in the gap, and slowly turn it to avoid sticking.
2. Contact after-sales service.
3. If the rotating post of the ring holder is loose, use a thin thread to wrap around the gap a few times and then tie a knot. Use a lighter to burn off the thread ends, so that it becomes tight.
Extended information:
Main functions
1. Prevent the phone from falling, safe and anti-theft
2. The angle can be adjusted at will
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3. 360° freely rotating stand
4. Infinitely reusable
5. Stable and strong
6. Will not fall into the toilet Medium
Reference: Baidu Encyclopedia: Ring Stand