You might want to mention in the documentation that https is required in “http” requests made by Olisto Connect - using http instead of https in my case returns the unhelpful error “Unresolved error: triggi/response error” and nothing is received by the destination server. It’s possible that this is due to a setting of the web host I am using as a server, but if so it’s probably typical, so a note in the documentation would be a helpful hint!
Are you sure that your server accepts http? Or does it perhaps redirect http to https? It seems that http works correctly in many other cases…