I'm not too technical to be able to do that.

I have since found out that the activation email for new registered users is not being sent out either. I told the host this and they replied

"Usually, this issue is caused due to the incorrect SMTP settings in the form configuration file. Before we confirm the issue and to investigate it further from our end, can you please give a try by updating the SMTP server settings in the configuration file"

I have no clue where this form config file is or how to update smtp server settings.

All I know is it has been working fine and I have not changed any settings in the script admin or the server cpanel but all of a sudden the emails stopped being sent.