It's already on 1.0.1 maybe that's the problem -> GitHub - CastagnaIT/repository.castagnait: CastagnaIT Kodi addons repository
Or just install 1.14.1 directly -> Releases · CastagnaIT/plugin.video.netflix · GitHub
Kodi 19, mainline LE have to use the v1.0.0 addon and the v1.0.1 addon is only for older Kodi 18 based images.
Android plays Netflix correctly so I don't know if it's perhaps a problem with software decoding on the mainline images or Netflix blocking LE user agent strings etc. I will try with some older Kodi 18 based LE images too and see if it works there.