Legacy Realm Cloud Extension

Hi,
I have the same issue here and I tried to email @Marco_Bonezzi as described here : How to extend for Realm Legacy? - #2 by Drew_DiPalma

I want to make sure this is still the right way to get that extension because I can’t be ready for next monday.
The instance is : medica.de1a.cloud.realm.io

Thank you very much for your help