Notifications and Reminders not working

Camille • ♥️ IVF baby 03/2021 • Miracle baby 11/2017 ♥️
I never get notified when someone replies to or likes my posts, the most recent notification I have when I check is from 5 months ago. Also I have reminders set up to remind me to take my vitamins and they never work...
Is this a glitch in the app or just me?