[Q] SuperSU unable to run and uninstall, SU binary needs to be updated

I have a Samsung S4 with Android 4.3 and CWM. It was rooted with CF-Auto-root.
I decided to update SuperSU to the latest version 2.0.

1. First I activated the cleanup function from the SuperSU menu to be able to reinstall it from Google play.
I downloaded and installed it. It displayed "The SU library needs to be updated" then it displayed "How would you like to install the SU binary?". I choose TWRP/CWM button because I have CWM.
During automatic reboot into CWM recovery it installed something and then rebooted normally.
It didn't work. SuperSU displayed "The SU library needs to be updated" again.

2. I chose "Normal" button in SuperSU when it asked for binary install.
It failed to install again.

3. I downloaded SuperSU zip package (UPDATE-SuperSU-v2.00.zip), booted to CWM recovery and installed the zip file.
After I rebooted and tried to run SuperSU - it didn't work. It displays "The SU library needs to be updated" again!

Now I can't even uninstall SuperSU because it's not in the list of downloaded apps.
I can't even access its settings to do a cleanup and remove it.

How to make it work correctly or uninstall it completely?
Any suggestions?

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