add block app with the bird on the icon forgot the name topic

Well i forgot the add blocking app with the bird on it i found out that is one app the works with the music app that doent shows adds

[Q} Forgot password and can't hard reset topic

A friend wanted to do a joke and changed my screen pin and forgot it now when i want to hard reset my sm-n910F i get this error
"warrning mdm dsnt alow this operation "
After phone restarts