How to resolve Missing ID?

Now it comes up with Missing ID
How is this handled?

You may be interested in watching this: https://youtu.be/3s_3YUDsIzw

I have added it to the README in Github.

Thanks for the reply

But video does not show Missing Id issue

Can you resolve this for me. 
I will gladly pay

I do not think you need to pay me. I will ask, however, have you setup your Square location in both Square and LiteCart?