The strap and the band screen are matched in multiple sizes. In order to ensure a better visual fit and a better wearing experience, the matching size is very strict, and there will be problems with smoothness, which will be more obvious on the ceramic edition. You can try to press the quick-release button to adapt the strap. After disassembling and assembling several times, you will have a better visual and wearing experience.
For your reference, here are more details about installing the strap on the Xiaomi Smart Band 10:
1. If difficulty persists, gently wiggle the strap while pushing to align it properly;
2. If the strap can’t be installed after pressing the quick-release button to adapt it, you need to replace the strap.