Hi @albertosmith
If you have tried a factory reset and it still doesn't start correctly, as it is only 2 months old I suggest that you verify the purchase date and then consult the manufacturer's warranty information that came with the phone's documentation, as to what you have to do to make a claim for a warranty repair or replacement.
If you can't find the information these are the relevant passages from the warranty document (see link),
https://www.zteusa.com/media/pdf_files/Consumer_Limited_Warranty.pdf
''For warranty service information, please call the following telephone number: 1-877-817-1759, 1-212-444-0502 or return to the point of sale for the products. The retailer can return the units to ZTE authorized service center in US for repair service
Seller will, at its sole and absolute discretion, either '''repair or replace a product '''(which unit may use refurbished parts of similar quality and functionality) if found by Seller to be defective in material or workmanship, or if Seller determines that it is unable to repair or replace such Product, Seller will refund the purchase price for such Product, provided that the subject Product (i) is returned to a Seller authorized service center within the '''one year warranty period''', and (ii) is accompanied by a '''proof of purchase in the form of a bill of sale or receipted invoice''' which evidences that the subject Product is within the one year warranty period.''