Why isn't the app installation prompt showing while testing Subscriptions API?

[Cleankitchen]

Hi!

I'm trying to test Subscriptions API on the developmnet store. I have created an app in the partners and it has full acess to the subscriptions API, but when I try to install it on the dev store, I'm not getting any installation prompt.

I'm following the quide here https://shopify.dev/tutorials/authenticate-with-oauth

But instead of the prompt I'm being redirected to the dev store straight away with hmac, store and timestamp query params. The app is not installed, thought and I can't use Subscription API endpoints.

Would be grateful if someone can help me resolve the issue. Or point me to the right direction if I'm doing something wrong to work with the new subscriptions API