Que des fausses alertes et des appels à dons !
Parfaitement inutile donc.

They removed option to no javascript and they made the UI even worst...

Unlimited LOCAL monitors are not FREE. Local monitors do not use their server. Max free is 25. Insufficient for any typical user. I dont mind paying for cloud monitors but local not being free is greed in my book. In early days this developer seemed genuinely helpful and there was no restriction on local monitors. After all your NOT USING THEIR SERVER. Now use PageProbe that does not have limitation on local monitors

It just doesn't work at all. I can click and it selects the XPath and grabs the text, but then when I save and it checks for changes all I ever get is SELECTION_EMPTY. The same is true if I enter a CSS selector instead. Congrats on the "click and get a selector" part of your app. I wish the rest of it could work at all.

Horrible, gives me tonds of fake alerts, has never gave me a good alert in two months of use and keeps randomly redirecting me to other webpages when I'm doing something

This extension is getting more restrictive. Previously, you could have more 450 LOCAL alerts, You could have more than 2 computers sync etc etc. now Restricted to 25! If you are only locking for LOCAL alerts and NOT cloud bookmarks then look else where. Im using my own ram, harddisk and processor. Happy to donate but Restricting Local alerts is just greedy greedy greedy.

Would not try if i knew its paid 'extension'.

Does NOT work anymore on Linux

$264 per year so I can have enough pages checked OFFLINE? I think that's too expensive. Elsewhere, you can get an independent program for a one-time fee of 30 € without limitation in offline mode.
I would be willing to pay for a one-time price to unlock unlimited offline use.
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$264 pro Jahr, damit ich OFFLINE genug Seiten prüfen lassen kann? Das finde ich zu teuer. Woanders bekommt man für einmalig 30 € ein eigenständiges Programm ohne Limitierung im Offlinebetrieb.
Für einen einmaligen Preis, zum freischalten von unlimitierter Offlinenutzung, wäre ich bereit zu zahlen.

Es braucht nun einen Account um zu funktionieren und dazu ist die Anzahl der lokalen Monitore und damit Seiten auf 20 begrenzt.
Das ganze Addon ist damit im Grunde kostenlos nicht mehr zu gebrauchen. Wenn man Geld für die Scanner in der Cloud will ok, aber Offline auch? Dafür gibt es andere alternativen.

The plugin works great, it's reliable enough for me to not worry about missing new content on an important page.
However, I'll humbly take 3 stars off for jumpscaring me every time an error occurs. The sound is as obnoxious as it gets, and for some reason it's MUCH LOUDER than the rest of the sounds on my system, even including music. I'd love to see an option to change/disable that, until then: 2 stars.

Actually, ignoring the reviews + regularly checked pages popping up on the "pop-up" window when doing sth else in them = 1 star, why not.