Ok let's try this go into settings and search for snapchat and clear data and lets see if this works
Issue has been resolved! I had Substratum Theme and Andromeda and a theme on so I uninstalled all overlays and restarted my phone. Now my notifications for Snapchat are showing and sounding.
I'm happy you were able to get it fixed
Thanks for your assistance in this matter.
How to mark as resolved?
If you have any questions in the future feel free to ask