Did you added your own Google API key? Look at the help.
Check in YouTube if the id WorldWideFormations belongs to a username. Check the FAQ of the plugin or send error messages to support.
Office 611 & Lobby Level
The Fairmont Dubai,
Sheikh Zayed Road
PO 33964 Dubai, UAE
Office Hours :- 8:30 am to 4:30 pm
(Sunday to Thursday)