Notification Issues

edited 12/09/19 in Smartsheet Basics

Has anyone had any issues with someone not receiving email notifications on certain sheets? Or receiving the email notification and the comment not showing up in the sheet? It looks like a glitch happened to one of our sheets on August 29 and I wanted to see if anyone else had the same issue. It seems to be resolved but I'm trying to figure out what caused the issue. 

Any insight?