I am also having this issue.
Neither admin or user is receiving email when registration form is submitted.
Note:
– I have all email notifications activated
– I have two forms, one which requires email link activation and one which requires admin activation – neither emails get sent.
– I have checked junk mail to no avail
– I have tested with two different form as well as different email service providers.
– I am using Ultimate Member version 1.3.88
Thanks,
Jack