There are a couple of things that make using Spotify a terrible user experience, hopefully your product and UX team will fix this.
1. Your Spotify Premium is not $9.99 like it states on your website and in my Spotify user acount. The Premium plan is $14.99. Spotify states that its Family and Premium plan but either way the price is inconsistent. Suggestion offer three plans, Free, $9.99 & $14.99 or just two plans, Free and $14.99
2. Adding a new user is the worst experience I have encountered with a business with such a large user base. I really have to cancel my account in order to add another family memeber? Suggestion - dont give the user the illusion of adding memebers is as simple as clicking an authorization email, its not.
Do not project your business problems on to the user experience.