I need help for Aloft

Hi,

I play on ultrawide monitor so my nameplates have this thing of being displayed huge. It s like fighting nameplates and not enemies.

I downloaded Aloft, c oppied it on the addon folder of wow, it also shows in addon section of the game before loging with my character, but I can t open the interface in game.
The command /aloft waterfall opens nothing.
Can you help me fix this problem or recommend me a nameplate addon that woks:

Thanks!

I use this GUI: https://github.com/ElvUI-TBC/ElvUI

Nice nameplates. They're small and nice. And you even get nameplate icons that show which people (in PVP) are healers etc. I guess that it detects heals and marks those people as healers internally.