In the 54th episode of Hump Day Hangout, one of the participants has having the trouble connecting Youtube to other entities in the IFTTT network. The reason was because of the new RSS feed format being rolled out.
The exact question was:
Having trouble finding the correct feed format for my YouTube channel add it to properties.Tried all the ones attached in the training but it doesn't like it. Summary feed, content feed…they don't seem to be working but then again I could be doing something wrong but I really made sure I watched the training over and over b4 contacting you about this.