this extension is not working on instagram website

[mohammadhasani]

this addon is work on youtube yet it is not work on instagram why ?

[Nikerabbit]

Check your settings on to see if instagram is on the list of disabled sites.

[mskiptr]

Within this extension's settings there's a list of "Sites on which extension is disabled". By default this list seems to contain Instagram, Twitter, Vine and Imgur.

I'm not sure why it's there. Someone more interested in this than me could try searching the issue tracker or the commit history to find an explanation. If there's no good reason it could likely be changed | fixed. Otherwise the extension should definitely be made more intuitive in this regard because this part is quite unexpected and confusing.