Hello!
Sorry for the late reply. hehe
I uploaded the code and DLL necessary in my repo. You can try:
https://github.com/andvasconcel/ZxingEasyAR
You need to edit default cs file (CameraImageRenderer.cs) and add dll in plugin's folder. I added some comments in the code to you undertand whats I did.
If you need help, Tell me.
Best reguards.