Make sure GO locker V1.05 has been installed.

====>Tips:

1. Make sure GO Launcher EX V2.58 or above and GO Locker v1.05 has been installed;

2. Click Menu>Plugins>GO Locker, choose a theme you like and apply it to your phone.

Matching topic please search B.Gold GO launcherEX theme
https://play.google.com/store/apps/details?id=com.gau.go.launcherex.theme.BGold&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5nYXUuZ28ubGF1bmNoZXJleC50aGVtZS5CR29sZCJd