I studded at home the Sunday lessons available on YouTube and use them in teaching 5th & 6th children at church on Sunday's. This last Sunday 09/18/2016 was the first lesson after a three months break. After 5 Min. of a 20. Min. video a white square appeared in the center asking for the password? Also I noticed that when we started the computer it used to come up in YouTube. Know it asked for a password. (I have no password.)