Get monday.com API subitems

I'm late to this, but it will hopefully help others. 
As a software developer, sometimes, doing it ourselves, isn't the best use of our time; just like we use plugins when coding - including paid ones, we can use third parties when the development time is greater than the costs of the App.

Where am I going with this? Well, I have been using Tugger (https://tuggerapp.com/) for a while now. I joined 'em before they even had a Monday connector; what they do is pull (or Tug as they call it) you data into their data warehouse. (It's also nice to see that they are now ISO 27001 certified.)  

Once your data is in Tugger's warehouse, they provide secure OData credentials to import into the reporting option of your choice, such as: Power BI, Excel and Tableau.

Trying em out is a no-brainer, IMO, as they offer a free trial.