Edit : version 6.7.7 just fixed this!!
Great extension thank you
previous review: stopped showing technologies on Firefox 89.0.1 for ubuntu, note that it was working very well but latest update made this !! I've been using it for the past 3 years on all my laptops including at school so it pains me to give this 1 star I hope it gets fixed soon and I'll be more than happy to give even 10 stars