I decided to play Max & The Magic Marker again on iOS after playing Max: The Curse of Brotherhoodon the Xbox One.
Max & The Magic Marker is an amazing fun game to play. Ofcourse i will be uploading all the levels to my channel KloakaTV.
Get Max & The Magic Marker on iPhone or iPad.

Error type: "Bad Request". Error message: "Bad Request" Domain: "usageLimits". Reason: "keyInvalid".

Did you added your own Google API key? Look at the help.

Check in YouTube if the id PLx71cHij1Wfzcrimj10n4cFoFSp8tIcq4 belongs to a playlist. Check the FAQ of the plugin or send error messages to support.