Azure functions can use something named function keys that can work as env variables, they were working but after the last deployment those config values could not be read.
We need to do some testing around it. Please, dedicate some time to make the work again for now the values are in the config.js file. The code in CVS has dummy data that you need to replace for the values pinned in our slack channel.
This seems to be a DevOps work since it is more focused on Azure than coding itself