Extensions only app won't install

[JPastorOnestic]

Hello, i'm trying to install an extension only app for pre-testing in one of our customers store. 2 months ago i was able to test the app in company's DEV stores, but now seems that Auth URLs are not working and cant install the app.

The app is public but hidden, purpose is make it visible after this app become finely tested, as extension only app it has no external server (it should be compiled and rans inside Shopify).

Fragment of TOML file:

```

application_url = "https://shopify.dev/apps/default-app-home"

embedded = true

[auth]

redirect_urls = [ "https://shopify.dev/apps/default-app-home/api/auth" ]

```

I've tested some different `redirect_urls`:
- https://shopify.dev/apps/default-app-home
- https://shopify.dev/apps/default-app-home/auth
- https://shopify.dev/apps/default-app-home/api/auth
- https://shopify.dev/apps/default-app-home?auth
Nothing seems to work, please need some directions, "https://shopify.dev/apps/default-app-home" was working not so many time ago. Thanks!!

[JPastorOnestic · Accepted solution]

Solved:https://shopify.dev/docs/apps/app-extensions/extension-only-apps