Randomly Stops Working (Crappy title)

[turtle0x1]

Sorry for the bad title but there is no other way to describe it,

We have this add-on installed on about 40 computers, 90% of the time it works fine but sometimes it just stops working on random PC's?

It seems to stop detecting the links on the page, but that exact same versions work with the same links on other pages

Is there a log file or a way I can debug this problem ?

[AWolf81]

Sorry, for the late response.

There is no log file but you can open a debug console for the extension to see if there are errors logged.

Goto your addon page click on the gear icon with a dropdown and select debug addon.

Then enable debugging with the checkbox on the upper left and click debug located at the extension.

(Accept the prompt for the connection with OK)
Then change to console and test the extension by clicking a link or reloading the page with the links. After that check if there is a log in the console.
e.g. the following screenshot shows a log for the url the extension received.