1. System problem: Try downloading with different devices or browsers, or contact relevant departments or technical support for help.
2. Account authority: Make sure you have sufficient authority to download the medical insurance card. If there are any restrictions, contact relevant departments to solve them.
3. Incorrect or incomplete information: Check whether the personal information you provided is accurate, and ensure that the correct student information and other necessary authentication information are entered.
4. Expired or invalid: confirm whether your medical insurance card is still valid. If it has expired or is invalid, it needs to be updated or reapplied to the relevant departments.