cm security locked out of rca 5.0 tablet

i forgot my passwords for gmail,google,cm security so i opened a yahoo n the code they sent me will not work even tried my kids gmail the code still didnt work please help

https://r.tapatalk.com/shareLink?url...0&share_type=t

Duplicate. Please, see response in your other thread linked above. I'll close this one to avoid parallel discussions.