Impossible to desactivate Reactivation Lock

Hello everybody, so I have a big problem... After installing XtreStoLite ROM, I accidentaly checked "Activation Lock on" in the installation menu after the first boot... So I search it on config > security and there was not option to deactivate it. Then I flash with Odin the stock lollipop 5.0, then it appeared in security menu, I tried to uncheck it, put my samsung account and still checked, its IMPOSSIBLE to uncheck it, im getting crazy with this, already factory reseted, deleted and created my samsung account again and nothing works..

How I can deactivate it back?? I don't wanna use this stock rom.