Unlocked, replaced software The Edge mini tablet

I sent in this device to Keefe Group, had it unlocked and software installed, the only thing I have on it is Google. I can't download any apps or any play store. I tried downloading Facebook, for example and it said incomplete due to parsing problem, I went into security-device administrators and it says no device administrators. Right now it is pretty much useless except for Google. Am I doing something wrong? It has no phone. Can you PLEASE help me?? It is an android, Condor kernal, 32 GB

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