I can't get this to work with Kubuntu 20.04

[diogofd8]

Kubuntu 20.04.4 LTS x86_64
kernel: 5.13.0-40-generic
kded5: 5.68.0
kwin: 5.18.6

I have under System Settings > Workspace Behavior > Desktop Effects > Appearance:
Blur and Translucency marked (blue box)

Then I installed kwin-forceblur 0.6.1 through the KDE System Settings Module, I have Force Blur marked (blue box) on Kwin Scripts but no configs visible.

.local/share/kservices5 dir has forceblur.desktop with the following content:

[Desktop Entry]
Name=Force Blur
Comment=Force-enable Blur effect for certain windows
Icon=preferences-system-windows-script-test

X-Plasma-API=declarativescript
X-Plasma-MainScript=ui/main.qml

X-KDE-PluginInfo-Author=Eon S. Jeon
X-KDE-PluginInfo-Email=esjeon@hyunmu.am
X-KDE-PluginInfo-Name=forceblur
X-KDE-PluginInfo-Version=0.6
X-KDE-PluginInfo-License=MIT

Type=Service
X-KDE-ServiceTypes=KWin/Script

X-KDE-ConfigModule=kwin/effects/configs/kcm_kwin4_genericscripted

What am I doing wrong? Does this not work with what I have installed?