Today we received a rejerction of a minor update of our app. We have a kind of sticky note at the bottom of a list of content, that tells the user, that he or sche can integrate more sources with our payed cloud sercice. A button links to our homepage. It's just an option and the ad disappears, if the user clicks on the button to get more information.
We also use in-app-purchases for some additional features of the app, but we can't migrate our booking and paymend process of our cloud source to an in-app-purche, not only for technical but also for economic reasons. I think, it should be possible to link external payed services, because other apps with payed service like LinkedIn don't use in-app-purchase either.
It is very frustrating. Microsoft's review process is also accurate on the App Store, but it does not limit software vendors to that extent. Since the market for macOS apps is relatively small compared to Windows apps, it is not easy to convince shareholders or management to continue product development under these circumstances.
Has someone an idea, how to link information about an external service, that increases the user experience of an app? Do we have to use a special wording like "optional" or "learn more" instead of something like "get our cloud service"? We will also offer free accounts in addition to payed accounts for our cloud service soon. Would this make a difference?