The extension itself works fine, but they have started charging for it.
Initially, it was completely free on both iOS and desktop. After that, they started charging on iOS after three pop-ups were blocked, but said that desktop would remain free.
However, I've just received a message from the extension saying that they will also only allow three blocks per day on desktop.
Consent-O-Matic is completely free, works just as well (or even better) most of the time, and is open source.
The daily messages telling me to pay on iOS were annoying; I won't put up with them on desktop either. It was nice while it lasted, but I'm going to uninstall it.
If you're OK with paying, go for it — it's a fine extension. Otherwise, just install Consent-O-Matic.

Sadly, a case study as to why to not enable automatic updates. Clippy and Louis Rossmann would be sad. Created an account to review due to recent changes.

I will give the author credit where it is due, he seems to be updating the extension regularly. It's now on version 3.31 and as far as I can tell, the subscription wording was added back 3.29, and I've since downgraded to 3.28 and will leave it there until I find a replacement. I will also give the author credit for creating a popup to let me know as I hadn't realized it had stopped working. And I learned that downgrading an extension is a built in feature of Firefox.

The only other extension I know that charges is PushBullet, but their free option is quite more generous than '3 times a day.' I also rather look at it that something has changed for the developer as he now feels he needs funds and hope things turn out well for him. It's easier to think that, than something like he just got greedy. Or maybe it's better the other way around?

For what it claims, it seems to do what is says. Only had some issues with locally hosted sites, but the blacklist feature is useful enough for that.

Edit:
Updated to 2 stars due to friendly developer response. I cannot go farther than that because they change the extension after the fact. Would have no issue if it was like that from the start. It's unfortunate because I see where the developer is coming from (as a programmer myself) and I understand the thought process, but can't support the act. If you see this Francisco, I thank you for your offer, but I'll have to refuse on principle.

The extension causes YouTube Watch Later and other Notifications to load painfully slowly.

Potentially a fantastic addon, but in use it seems to really slow down FireFox on all platforms.

Get this issue resolved and your onto a winner, likely up there with some of the most popular.

Until then, it's on ice.

Be careful: Please read the privacy policy! The addons collects usage data.
If your are serious about privacy maybe choose another add-on.

popups not detected
(clear the cookies 1st in your browser before test)
for example the cookies messages of the site
https://www.thomann.de/


same problem with the addon "Auto Cookie Optout"

EDIT: to answer the developper:
No www.thomann.de has still the same problem, so i don't know how you test your algorithm recognition.

This extension feels underbaked. I liked that you could select which type of cookies to accept so I switched from the I Don't Care About Cookies extension to Super Agent. Just in the past hour or two, I've run into two websites where Super Agent didn't detect their cookie prompts. Needs a single-click reporting feature for websites where the cookie prompt isn't caught by the extension.