I've added YouTube video and added it at the description of OEX Application https://openexchange.intersystems.com/package/Water-Conditions-in-Europe
Also two related articles posted to DC, linked to application, please count.

And the last question is about bonuses for Tableau, PowerBI, Logi.

According to The Rules 3 points count for each of that systems.

I've used all them 3 in Contest App.