What are the chances of my Flask-built app being rejected in review?

[tk09]

I've built this shopify app on Flask. When the merchant installs it, the app redirects to the OAuth page, which shows the permissions(i.e read products) and then takes the merchant to the App home page. After the merchant connects with the app, we take the access_token that is given to us and use it with the API KEY of our app to read products from the merchant store and save them to our Database. So the question I have is that, how much chance is that my app will be rejected in the review?