Nice with the small set of permissions!

Seems to load and show subtitles fine, but I'm having trouble using +Sub on dailymotion. It seems that the site's CSS wreaks havoc on the dialog: https://imgur.com/a/Ldk8LAR

edit. Works fine in 5.1.2 update!

edit2: So there seems to be no way to reply to your reply. A handy feature would be changing/scaling the speed of the subtitle, in case it does not match up with the video. Idk if it makes more sense to apply it before or after the offset.