How to test email notifications for Workforce Compensation?

Content (required):

Steps I tried:

1.Enabled reminder for below worklist. (Tried disabling it as well)

2.Update the approver's work email to my email address, set as Primary.

3.Submit timesheet as manager.

4.Log in as the approver, the approval notification is available in the notifications list but no email is received.

Version (include the version you are using, if applicable):

22C