do not work , لا يعمل

Emailed prior to end of subscription to instruction cancellation to avoid rolling over to another year. No response received and card was charged. No response to multiple emails and messages through their own website's Support section.

---Update on 25/07/2021:
It works great.

RẤT HAY

Was working well and has done for 4 years (I have the pro version) - had a few initial problems, but they were sorted quickly. However, after Firefox updated to v.71 it refuses to work. I have reported it, and the developer said it was sorted and to re install updated add on, which I have done - but it still refuses to function. The developer, has in the past, been very helpful in resolving any issues which might come up and to be fair going on past experience I would have given it 5 stars, but because of the current problem, which is irritating I give it 4

Бесполезное расширение. Разработчики зря тратят своё время и время пользователей. А что, сразу нормально всё сделать не судьба? Не дополнение , а прикол какой то.

It's ok :)

NICHT EINE Seite wurde geöffnet, jedes Mal Zeitüberschreitung.

NOPE... It doesn't work as of this date on YouTube & the latest Mozilla version!