I keep hitting this point when connecting the carrier to shopify, it simply doesnt recognise Stuart.
I do need Stuart for on demand delivery, please help 
Hi Sunny,
Thank you for contacting our support team.
Have you followed and completed all the steps on this guide and video?
On your screenshot I can see you have unsaved changes, could you please check if this could cause Stuart not to come up? What are the messages highlighted in yellow behind the rate window?
Kind regards,
Deborah