Instagram notification issues?

When I first unlock my phone (after I've collected lots of post notifications), I see that "So and so just posted a photo" and "so and so just posted a video," and I will have roughly fifteen to twenty posts like that. When I scroll down on my screen to open my notification list (on the iPhone 6 if that makes a difference), I tap a notification, and it opens the post I want to see. However, when I swipe down again to see a different post, all my notifications from Instagram are gone. If someone could tell me how to keep those notifications so I can manually delete them after viewing each one, I would really appreciate it.

**Sidenote: I don't want answers like "check the settings," I need actual instructions because my mind doesn't work like that.

Delete your Instagram. Problem Solved