Used to be great, but since v2, many more clicks are required to start a scan and, even worse, the Check4Change window now blocks the browser window such that it can't be used. This is a major regression.

It seems many other people are affected. You can install the old version right here at addons.vaultpit.io by going to https://addons.vaultpit.io/en-US/firefox/addon/check4change/versions/