not getting member email notifications

I’d a similar case, problem was on the domain level. I’d reached the limit of email sending. It was solved by creating an email account in my domain and setting it in the email tab for WP-Member configuration

Hope it is similar on your side.

Same case as you mbamba1, email notification and user registration validation doesn’t work. WP 4.2 and WP-Members 2.9.9.1

It is not an email issue in my case, when a user subscribes the default WordPress emails are sent and received normally.

I’ve posted a number of possible causes and solutions on this thread.