ESS Password reset link

Good day,

I added new employees to Pastel Payroll, sync the data with SS and the employees appear on SS with the correct email address.

I went to user maintenance and sent them a link to reset their password so that they can log into ESS.

The employees however are not receiving the link (this happened yesterday and again today). I asked them to check their junk folder but still nothing is showing.

What else can I try?