open qq, draw to the right, click on the personalized signature below the personal homepage, enter the personalized signature you want to enter, and then click on the upper right corner. If not, the possible reasons are: 1. The network is not connected. 2. Connected to the empty network. Empty network means that the signal is full, but the line at the router is not connected well. 3, or your signature has not changed and there is no income.