Message Seen Disable for Facebook™ by Baris Derin

3.2 Stars out of 5

6 reviews

Rated 1 out of 5
by Kudo Holmes, 2 years ago
not working in 2023
Rated 1 out of 5
by Ben, 2 years ago
Rated 1 out of 5
by lisaolisa, 4 years ago
Doesn't work. Not on developer's website anymore. Should be removed from Extension options.
Rated 1 out of 5
by Temoa, 5 years ago
It does not work in the new facebook version. Please fix!!!
Rated 1 out of 5
by Firefox user 15932404, 5 years ago
doesn't work
Rated 1 out of 5
by suyaku92, 7 years ago