Any update on this? The widget never refreshes after it’s added initially (specifically I added a playlist) so adding/removing videos to the playlist never changes on the widget.
Hi there, @user1527 and welcome to the Community 
The new video don’t appear/deleted videos don’t disappear from the widget right away because of the cache, which is 24 hours in our YouTube Gallery widget.
I’ve checked your widget and see that it’s been updated, since all videos from the playlist are displayed there:
Please check it out and let me know if everything is fine now 
Yes! I did not realize the widget would cache the list for a period of time. I can see it updating now! Thanks for your quick response.
No sweat!
If anything else comes up, we’ll be more than happy to help 