I went through the Opla kit/IoT Carrier Lesson 6 Smart Garden Project, found several errors that needed to be corrected to make the sketch run.
When defining the 7 variables, the writeup tells you what permissions to choose but does not specify the update policy for each variable. Some of the projects tell you, many don't - I generally assume that means leave it at the default of On Change but that didn't work here. You need to define Humidity as Periodically or the sketch won't verify.
When building the dashboard, the project writeup shows you a table for 7 widgets but it looks like they just did a cut and paste from the section telling you how to define the variables. In the rows under Widgets it shows you variable types (like boolean) not widget types. The first three should be switches, Light should be value and the other three should be gauges.
With those fixes to the project tutorial instructions (and a few multiple starts before actually getting the board to connect to the IoT cloud), got it up and running.