How do I see my magazines?

Here is an example. I have a subscription to Glamour magazine. On my old iPad (an original iPad 2 that wasn't even on the latest iOS because there was no space left) my Glamour magazines showed up in Newsstand automatically. I can't find Newsstand on my new iPad Pro or in the app store. Maybe it's been discontinued.

Here's what works. I downloaded the Glamour app from the App Store. I had to sign in. It doesn't use your Apple ID and password. If you don't recall what you used when you set up the subscription, you might need to reset it through the app. Luckily I guessed it after a few tries. Then I had to click Restore Purchases, and my magazines (including old issues) are available, mostly in the Cloud.

Have you searched for the magazine via the iPad's spotlight search screen (swipe down, not from the very top of the iPad's screen, the iPad's screen) ? If that doesn't find it what does the magazine's description page in the store say and/or their website say ?