You had a trial membership period and now the videos are again locked?
Continued access to the drawings requires a membership that is active and paid for. Check to see if you received an invoice from PlayKids after the trial period ended.
If the membership was not paid, it is possible that there was a validation problem regarding your payment details. Sign up for the app again to access the videos.
If you did receive the invoice and the videos remain blocked, restore your membership. For further instructions on how to do this, click here.