TracFone doesn't support unlocking bootloaders. There's no way around it unless TracFone gets on board. I even called them and expressed how angry I was with their false advertisement where their motto was "where you own your phone".
This model of the moto e is the only one that can't be rooted and furthermore, it's the only one that will not receive the new android 5.0 update. It's a POS and I wish I never bought it. I'm on it now through Wi-Fi only cuz I refuse to give those pukes any more of my money