How to use the physical keys for the Sifely S Smart Lock?

Question

How to use the keys on for the Sifely S Smart Lock? How to access the keyhole? How do you use manual/mechanical key?

Answer

For the older version of the Sifely S, please view the below video. For the newer version, click scroll further down. 

Here is a diagram on how to use the key for older version of Sifely S.