Thanks for your feedbacks.
That being said, I don’t understand their biometric approach to backup. I would really not like to share my biometric data directly with a company.
Zengo explained how they use biometric here, Discover Our Biometric Crypto & Bitcoin Wallet - Zengo
Zengo is using this company's solution FaceTec.com | 3D Liveness, 3D Face Matching, OCR, & NFC
Can you please share with me more about the bad side of such solutions 
?