I lost a lot of time understanding why Dashlane extension was no longer working on Opera (on Mac OS 10.11): due to the automatic update of Opera and its version 53 which cuts the communication between Dashlane and its plugin (via the extension "Install Chrome Extensions")! So I found (with difficulty) on the Web how to disable this automatic update: https://forums.opera.com/topic/14028/how-to-disable -auto-update-on-osx, then reloaded version 52 which solves the problem. I am surprised that an update of Opera is incompatible with an add-on as important and popular as Dashlane. I think I can not no more wasting so much time in case of new bug so annoying and I will change broswer.