hi @singleclickapps:

No, I was consistently getting a pop-under ad for Avast AV every time I launched Opera.

It was a fresh install of Opera (on a newly built Win11 PC) and I hadn't experienced them before installing Close & Clean, but I did after and, as mentioned previously, uninstalling the extension stopped the pop-unders.

However - I've just installed it again (with no other changes apart from an overnight system reboot) and I'm not getting any ads so, fingers-crossed, it was something else and I can continue using 'Close & Clean'; which would be great as, although there are other extensions out there which will clear the cache, etc - this is the only one I've found so far that has the option to close all tabs as well, which is just soooo convenient!

As a result, I've changed my rating from a 3 to a 5

Unfortunately, I started to get 'pop-unders' after installing this extension. Removing the extension stopped the pop-unders, so that's something.

Appreciate everybody deserves to be rewarded for their efforts and could understand if the pop up / under route was for a free offering, just as long as there was a paid-for version that provided an alternative that prefer to live life ad-free