In order to activate the cookies warning, go to:
> SETTINGS > Cookies warning
In this window, the warning may be activated or deactivated, and a warning text may be entered for each of the active languages.
According to the current European legislation, in addition to displaying a cookies warning, it is mandatory to give additional information about cookies (what are they, what purpose they seek, etc…). It is advisable to create a page specifically for this purpose that may contain all this information.