Please go to the URL's of what you are using as they have there own support page/s and or contact info. As well you have not provided enough info as there are many Personas so Have no idea which you are using except the extension you use after you have installed Persona. Mozilla only ok's Extensions submitted by Developers to be used with Firefox. They ok them only and give the Developer a web page to distribute their Extension from. This in no means that Firefox Support does the Developers Support when their page https://addons.mozilla.org/en-US/firefox/addon/personas-rotator/ has a Support link and a contact Link.