To resolve this issue, please refer to the following steps:
1. Try replacing the charging cable and charger to see if it can be charged. If charging works after replacement, the issue is with the cable or charger;
2. Use the charging cable and charger to charge another device to verify the functionality. If they charge other devices properly, charge the charging case for half an hour and observe. If it still cannot be charged, please contact the local after-sales service center for further inspection.
Note:
Charger compatibility can also affect the proper functioning of the charging system.