to Reset Factory Settings – ZTE WarpElite Phone

I do not remember google email or google password to use my phone. I've reset the factory, I've erased the data and nothing allows me to work around that. I was able to enter a new email, a phone number and a password, BUT it still asks for the previous email / password and we can not remember it. Can you help me solve this problem or work around it so that I can unlock and use my ZTE warpelite?