We have configured new user registration emails for users and password reset emails. Up until last Friday this was working fine but it has since defaulted back to a standard WordPress login email without any of the personalisation, so people are unclear what the emails are for.

The way our forum is set up is that we have not enabled 'Enable User Registration' as it's closed access for the time being. But we have enabled 'Enable User Registration email confirmation' 

Any idea why this is happening and how we can resolve the issue?