Connection Error - Roast Iq Controller - Safari

There is the chance that Safari is remembering past HTTPS redirection from roastiq.com.au.
Open Safari > Preferences > Privacy > Manage Website Data.
Search for roastiq.com.au and delete it's entry (this will clear caches, local stored data about the website, and HSTS policies which redirect HTTP to HTTPS pre emtively).
The app should now log you out and ask you to log in again
Log in and navigate to your roastery> roast and select your roaster
The address bar should now show - not secure
This should have reset the policy for the Roast IQ App.