Hi, since today it doesn't work at all. Tested also in a new profile.

[EDIT]
Version 3.9 is OK, the wifey no longer shouts at me, thanks for fixing!

Works great thank you! Only mild inconvenience is that I sometimes have to disable/enable the subtitles for them to show up.

Incredibly useful for language learning. I haven't spotted any issue yet! Thank you so much for this useful Addon!

真的不错！！我网飞字幕的字体大小调整不了，装了这个就可以了，还有双语字幕，支持支持！

I have tried this addon twice in a year, still having the issue that FF Netflix/the window is freezing like every 15sec., sometimes also the subtitle getting freezed, so few seconds later all the delayed text just run over the display. Uninstalled after 30min right away. Good idea, but buggy. P.S.: Learning mode should have trial mode/test mode, otherwise I won't just pay for something I have no idea how it's working. Keep up, I hope I will install it once again sometimes. :)

Works great, and the options to adjust subtitle font size are super!

Very nice, I like the shortcuts but sad that we can't add a background for the subtitles.

it doesnt work, I dont have the option to put the second subtitle... I dont put 1 star to support you, I would really like it to work
if you fix it i'll change my rating

edit : I dont know how to reply to you so here is what you requested, hopefully you will see it

Firefox 93.0 / 64bits
Windows 7

edit : it still doesn't work but the developer is very nice, i put my rating up to 4 stars