Hi Cecilia,
Sorry for that. The Lavasoft logo is confusing because it makes the forum look like something formally connected with the company.
As to your questions, I did everything according to instructions, including turning off the browser first. Using adwcleaner actually cleaned my system for a while, and then the Lavasoft Search came up again, which means that malware is installed somewhere in the system, that makes that happen. Short of suing Lavasoft I have tried everything else I could think of or was suggested in the web.