Hello,
I had issue with version 18.1.17.1, login fail, fix is available in upstream repo.
Updated package info for 18.1.19.1 is available in libreelec git repo for tag 9.2.3
I've build and tested Zattoo PVR 18.1.19.1 from 9.2 branch, used tag 9.2.3
I've got working add-on for :
Generic.x86_64
RPi4
Not sure if it's allowed to share the builded package, or how I could provide them to be included in official repo.