Snapchat notification stuck on lockscreen

Hi. I just recently had an issue with notifications from Snapchat getting stuck on the lockscreen (with always on display disabled). And as Ive been trying to resolve this issue, I picked up another one which is what the image shows. How do I change this back to the tab that comes standard?

And any fix to the snapchat notification issue?

EDIT: Removed the image as it was huge and I fixed the issue related to it. Still stuck with the snapchat notification issue, so any help would be appreciated.

— modified on Oct 20, 2018, 4:16:31 PM