I cannot find the option that shows/hides the privacy message. (which is referenced in privacy.twig line 23: {% if (aSurveyInfo.options.hideprivacyinfo == "off" ) %}). Currently the privacy message does not show, regardless if the survey is anonymous or not, a possible workaround is removing the if (mentioned above). I am wondering is this normal behavior for LS 3.15 ?
maybe this is not what you are looking for, but you can also try to enter some text in the welcome text or use the data policy settings (first screenshot).
Removing the if I mentioned solves this issue. It displays the message for the anonymous surveys. I thought this might be a bug, having one of the survey options missing, which needs to be reported.
An update on this issue. The hide Privacy is part of the theme options. It's found in Vanilla and Fruity but missing in Bootswatch, which I was using. A bug report was filed.