Paid subscriptions in mobile app - so confused?

I’m setting up my own Substack as I love the platform - mostly. But there’s something that’s really bothering me 😅 when I try to upgrade my subscription to others’ Substacks it’s really hard as it doesn’t let me in the app (many have the button ‘manage subscription’ and it has a message that says it can’t be done in the app).

As a reader it puts me off upgrading because it’s not clear how to!

But then I noticed this discrepancy in a couple of articles I read today too - one lets me upgrade in the app (first time I’ve seen that?!) and the other has the standard message that most of the others have when you’re reading an article for paid subs - with no button or option to subscribe in the app.

I just feel like it makes it such a chore for people to actually start paying for your substack and you’ll lose loads of people because it’s confusing? Are they going to improve this?