What does it mean that the download of the good grade tutor shows that the signature failed?
When downloading the good grade tutor, the signature collection failed, indicating that there is a bug in the good grade APP system. According to the query related data, there are many bugs in the good score version, which makes it impossible to obtain data. If this happens, users can query the score by downloading the old version with good score. If the old version can't be queried, they need to wait patiently for the latest version after emergency repair.