Did you added your own Google API key? Look at the help.
Check in YouTube if the id PLwgYdhLf1Cd07aHrqylyFtyo6guJbgA7k belongs to a playlist. Check the FAQ of the plugin or send error messages to support.
My Design Tutorials
Being one of the top Authors on Envato Market (Elite Status since 2012), I have over 400 design templates, goodies and other downloadable items ready for download. Sometimes people are not skilled enough to actually use those templates (even though, they are well documented, organized and tweakable in a matter of minutes). That’s why I sometimes release instructional videos to help them achieve the professional results they are looking for. All the videos are showing my original designs.
I also used to do demo videos for several popular design & photoshop blogs and forums. I got published in a prestige British magazine Advanced Photoshop (among many others).