If you get the message "YouTube API request failed: Invalid channel", then this means that the channel id you entered is not valid.
You need to use the CHANNEL ID, and NOT the USER ID. :-)
"FitnessBlender" above is a USER, and they can have MULTIPLE YouTube channels.
Please refer to our 1-Click Video Site Builder Quick-Start Guide.
Article ID: 178
Category: 1-Click Video Site Builder