hi everyone! Its me who question. i will edit my question.. " I accidentally press on the parental pincode" first i thought, i made a pincode and set up. But i just turned on the parental pincode.. And for those who did like what i did, i found the solution..
Just go back to parental pincode to turn off and this is the default pincode 0000
Thanks everyone..Have a nice exploring your LG Smart TV :)