Troubleshooting steps:
1. Check if the network is functioning properly, confirm that it is the latest version of the theme store, and try to apply again after upgrading.
2. Clear the theme store cache and try again.
3. When applying theme store themes, remember to select the theme Lockscreen option.
4. Close the Lock Screen Magazine function and reapply the theme.
Path to close lock screen magazine: Settings > Home screen & Lock screen > Lock Screen Magazine > Turn off