NO Email notifications on changes to workitems being sent to anyone in compnay

The steps that we have taken to troubleshoot are to delete all notifications and add them back in. I created a new work item and tagged others in the company, but no emails have come through. Since our emails are managed on your end, I wanted to bring this to your attention again. This issue began on April 29, 2025, and it seems that our company is not the only one affected.

@Durga Reshma Malthi has been trying to help, but after following all the steps that she has requested, we are still unable to solve the issue.