@Amelia_Waliany do you have recording of this session? Thanks!

Hi @MilanCZ91  For chrome you will need to install chrome extension "Target VEC helper" which will inject target libraries. If you already have it, please go to Page delivery under setting menu and switch off "Enable enhanced composer". After this it should work. Usually, I don't see any issues with...

Which type of test are you running? If its recommendations then check if algorithm has run and shows status "Results Ready".Also, if you are testing multiple tests at same time with different QA urls. Add this exit parameter (&at_preview_token=) to your url and then try accessing your QA link again.