How can I set a default Instance URL

Hello everybody!

I've been working on an app to test this SDK stuff. I would like to get the Instance URL prefilled to make it easier for users.

So I have tried on app.json with these two options:

"jsConfig": {
    "siteUrl": "https://ps*****/",
    "defaultServerUrl": "https://ps*****/",

I build a release version with the --site-url https://ps****** and I uploaded it to my Internal testing in Google Play. I update my app from Play store but I keep getting an empty field.

I'm sure I'm missing something. Any help, please?

Thanks!