Prior to Feefo 3.0, 'logos' were used to display the Feefo rating and the number of received reviews as part of a Lightbox and Link Integrations on a merchant's website.

As part of the Feefo 3.0 release, 'logos' were renamed 'badges' and a new interface was created to allow developers to preview the badge with its options before adding the code to their web pages. This can be viewed from within the Feefo Hub, accessible within each integration's set of preferences under 'Marketing > Widgets Gallery'. 

For more details see Badge Parameters For Feefo Logo and the FAQ, How Do I Configure My Feefo Badge?