Subscription purchase external

I have developed a web app for some companies to manage their goods. I am developing the mobile app too, the service is a paid service via monthly or annual subscription which I have already integrated via Stripe inside web app.

Companies can purchase the subscription via web app and use the mobile app only if the account has an active subscription, if not, the app will be fully limited.

Will Apple Review reject my submission if I don't provide users a method to create a new account and buy subscription via IAP or not?

Or can I just put a link inside app "Manage account" which redirects to the web app and buy subscription there?

Thank you for your post. We recommend that you sign up for a session with App Review during the weekly Meet with Apple Experts event. Sign in with your Developer ID and select "Request a one-on-one App Review consultation". A member of the App Review team will help you with your questions regarding the review process and the App Review Guidelines.

Subscription purchase external
 
 
Q