Hello, so I bought my son an lg stylo 2 (k-540) he has a billion google accounts and he cannot remember the one for this phone. My phone broke so I reset his for me to use and I can't get past the google verification. I tried to install root junkysdl but it won't let me change settings to allow unknown sources. I tried to go into developer settings by tapping build number 7 times NOTHING. Does anyone know how to help me?? If you do PLEASE let me know!! Thanks so much in advance!!!