My boy loves both YBCR and TW. May be you should try to join your child during the video and talk to them. We just can't depend on the TV. Children tends to respond to their parent rather than the TV.
Have you bought the TweedleWink DVDs? I have the complete set consisting of the TweedleWink Lessons (1 to 6), Math, Multiple Languages and Phonics. A total of 9 DVDs. Are you based in the US?