It appears a new section was added to the Thank You page when a subscription is being purchased informing the users they can manage their subscriptions by clicking the button.
This button just logs the user in to the system and goes to their Order’s page.
How I a change the link so that it properly directs the user to my subscription apps UI?
I have not been able to find any mention of this additional section in the changelog.
Hi @Matt_Insko 
! This URL isn’t currently customizable. You could potentially use some other customization to direct them to an offsite URL (I am assuming this is what you mean by subscription apps UI?) This can be achieved through a custom UI Extension on the Thank You page or within the Orders page.
Thanks for the information. Did I miss a changelog post concerning this change?
Currently this new section cannot be removed from the Thank You page. Will stores be able to remove it in the future. It directs their customers to the wrong place to manage subscriptions?
@Matt_Insko This is part of the general Subscription feature support which has been out for several years so it isn’t new. Our customizations team does not have this on any public roadmap to allow customization. Thank you for the feedback. I will pass along this feedback to the team.