I am on Manjaro KDE with all updates. Using nvidia prop drivers. nvidia driver: 525.60.11

Operating System: Manjaro Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.100.0
Qt Version: 5.15.7
Kernel Version: 6.0.11-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 16 × Intel® Core™ i9-9900K CPU @ 3.60GHz
Memory: 31.2 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 2070/PCIe/SSE2
System Version: 1.22.2

I installed kzones(https://store.kde.org/p/1909220) and now my KDE does not allow me to login !! It hangs during login.
I had to log in as a different user to send this message.

What I tried in my process to recover:
1. Logged in as a different user
2. "su -l" to my account in a terminal,
3. Deleted ".local/share/kwin/scripts/kzones"
4. $ rm .local/share/knewstuff3/kwinscripts.knsregistry

Tried logging in. Still does not allow login. I have to Ctrl Alt Backspace and login as a different user.

I invoked systemsettings GUI just in case:
su -l kc
export $(dbus-launch)
systemsettings
And now re-installed kzones and again manually deleted (in case my earlier manual delete missed some files)
Still no luck. Just unable to login. Any ideas on how I 'reset' kwin/kde to before I messed with kzones ?