Why I didn't receive submission emails?

We use jotform for our field employees to send in their timecards. We have had four different employees insist they sent one in and got a email confirmation, but we did not receive their forms.  I have asked them to forward their confirmation and none have, so I suspect they just forgot to send them and don't want to say so (this has been an ongoing struggle for us, which is why we switched to jotform in the first place), but I figured since there were four of them I should at least ask if jotform was having any issues this morning. :)   I did a test of the form myself and had no issue...but....

We didn't have any major reports regarding the issue you had, but if you could share email addresses of those employees (or submission IDs even better) we could investigate more.

You can check email history as well by following this guide: https://www.jotform.com/help/293-How-to-View-All-Your-Form-Email-History

Also, you could check if any of those emails ended in Bounce list: https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List

We'll wait for your response.

Thank you!