I cannot explain how frustrating this is. Not that I want to compare to Android, but in 3 years of QA Testing my app, Android works like a dream, while iOS fights with me EVERY SINGLE STEP OF THE WAY. Hopefully someone here can tell me what I am missing/doing wrong/which god I must appease to get this to work. I have 3 REAL iPhones of varying iOS versions and ages. But they are all proper actual iPhones. We use google accounts at this company, so my primary email is a gmail one. I have created MANY sandbox accounts inside App Store Connect. Currently I have 2, and 2 of my devices (both 14's one of which is a Pro) have my Primary account as the main account for the device. But they both also have a Sandbox account which is simply my main email with a +sandbox in it to make it a new unique email. Here is the problem, nothing works as expected ever. I can install my Staging and Production apps from TestFlight, then I can make a subscription purchase as a customer would and I SHOULD see that subscription in my Sandbox right? That's the point of a Sandbox and TestFlight is it not? But in ALL cases whenever I try to view my 'Sandbox Subscriptions' it tells me I don't have any. Now, sometimes, very occasionally, I get a specific error message inside my app when attempting to make a purchase, this one states something like 'You already have a subscription, please restore it instead...' which makes no sense. Since it clearly states that I have none. But this message has a 'Manage' button to manage my subscriptions, tapping it lads me to a windows which amazing DOES have a subscription in it. But attempting to 'Cancel' it does nothing, just refreshes the screen to be the same. Now I think that this subscription is actually attached to the primary account on the device and NOT the sandbox account. So when this happens I cannot subscribe, I cannot restore, and I cannot manually alter the subscription within iOS. So I am stuck at this point. What am I doing wrong, am I setting this all up in the wrong order? Do I need to install some kind of profile or security cert, do I need to give a pint of blood to Imhotep? What am I missing. I even once sat on the phone for 90 minutes with an Apple Support Rep who took me through it step by step, same result. Also I just noticed that inside 'App Store Connect' when you look at the list of 'Sandbox' accounts there is a column for 'Last Purchase' which is entirely blank, apparently after a year of use I have NEVER purchased on the Sandbox, which is another reason I think my subs are going to the main email, not the sandbox one. I tried using the sandbox email as the main account for the whole device, I can't recall the result but it was worse and didn't work at all. So that's not it. https://developer.apple.com/help/app-store-connect/test-in-app-purchases/create-a-sandbox-apple-account/ The instructions on this page are not detailed enough and were not helpful to me. All I really want to know is how to fully setup a real actual iPhone for TestFlight and Sandbox testing of a app. WHat order do I create accounts, validate emails, attach to devices, login with etc etc etc. Step by step, nothing no matter how mundane missed out. A true idiots guide to making this work for me. Testing this on Android always takes 5 mins. iPhone, I'm lucky if I am done in half a day. Please help and thanks for reading!