Not working for FireFox 52 Esr

[ahm5jnhi5]

It seems that the addon isn't working for older versions of FireFox.
I need it to work for version 52.9 Esr since this is the last version of FireFox that works on Windows XP.
Usually I prefer using Windows XP, so it'd be great if I can watch Netflix in 1080p without having to boot in Windows 10.
Thanks to this thread, I managed to get Netflix to work in XP in 720p using FireFox with Silverlight.
So, is there any chance to make the Netflix 1080p addon compatible with FireFox 52.9 Esr?
Or are there older versions of the addon that I can download?
Looking here:
https://addons.mozilla.org/en-US/firefox/addon/force-1080p-netflix/versions/
It says that all the versions should be working with firefox 48 and later..
So, how come it isn't working with firefox 52?