It does not block Mastercard site on Crypto.

And for me, since my text size is a little larger than normal I could not see any method for removing the popup, which prevented me to using the web site. The two buttons for dealing with the popup, provided within the popup by Mastercard, were not seen by me and so I was not able to use the web site until I guessed that there might be some hidden buttons; which I then revealed by scaling down my font size. Such is the stupid life of Windoze users. I was using Firefox on Windows 10. When I browsed to the same web site using Firefox on the Mac, my system effectively blocked the popup without me even knowing it had.

this plugin is working i like it , good job bro :)

Isn't working to stop video pop ups.

Hey, thanks for your extension! It stopped working under current Firefox, until you use the "pin to toolbar" option as per .... support.mozilla.org/en-US/kb/extensions-button#w_manage-pinned-extensions

It used to work out of the box, but I still liked having the button added by "customize toolbar" but that option was completely replaced by this right-click option. Please check this, as I think you're not aware of it. BTW I use current ultramarine Linux with ff v133.0.3 .. I think without the icon, the extension can't notify and so decides not to block at all ... :(

Amazing i love this and free to use

I'm getting a constant issue with "Do not block on this domain" checkbox. When not checked it refreshes the page and rechecks itself...

I tried few popup blockers, this one works fine.

used to be great but the update ruined it, i have no use for it without the blacklist option

It's really efective, thank you! However I'd like to know if there's a plan to add a blacklist function, since I currently only need this for 1 website and it's pretty annoying having to whitelist every other site (if there's a way to do this already in the settings please let me know and I'll happily change my review).
I also think the UI of the dialogue boxes could be improved, and would appreciate a lot a dark mode for the settings page.

not a fan of the new ui

Worked perfectly for me until today's update. I could not use my Roundcub webmail while this AddOn was installed, I had to remove it and everything worked perfectly after. There must be some conflict there.