Thanks for contacting us. This error message indicates that step 7 of this setup procedure 1 was not completed. If for some reason completing that step still does not work, we suggest repeating the entire procedure to create a new key.
We also noticed that you have some “fancy” quotes in your shortcode, which interfere with TubePress’ ability to display videos. Please see this support article 2 for how to replace them with “plain” quotes.
Thank you for using TubePress and please let us know if there is anything else we can do for you!
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