The reason why vv Music always fails the security verification:

1. Network problem: The reason why vv Music always fails the security verification is because your network connection is unstable or there is a problem.

2. Security policy: vv Music has some security policies to protect the security of user accounts and data. When the system detects abnormal or suspicious operating behavior, security verification is triggered.

3. User behavior: If you frequently perform certain operations or the operation method does not comply with its regulations during the use of VV Music, the system will trigger security verification to prevent abuse and illegal behavior.