when the postal bank pays money through the network, it is necessary to install the signature control on the equipment, which is the bank's security protection measure. If it is not successfully installed, the money cannot be paid out.

In order to facilitate the operation, it is recommended to install it before using it. Under normal circumstances, the webpage will be prompted to install it. Just follow the prompted steps.

The installation is really unsuccessful. We should consider whether it is a system or browser problem. These problems are often the main factors that affect the unsuccessful installation.