Hey Guys, i download a new Interface, and what i do? next step to (Alt + Click) remove buff?

[Alexander9595]

link i used to download interface: https://mmo-dev.info/resources/interface-iperfect.2907/

i put in my server and change the options in custom.properties

but dosent work, someone knows what i need to do next?

 

[MrTitan]

what exactly don't work?