dmenu, volume, stalonetray is not working

Hello, thanks to share your config, seem it will very good for me, just begining in the Linux. 

Well i install the thing  as you said in the readme.md. The issues I notice: 

The  "Vol" only shows Updating, the stalanotray not load or are not showing up, when i press alt+p, nothing happens, the same to the screen shots binds.

thank you