investigating lack of referrals

The Moodle plugin in this previous post was not reporting any referrals for the month of August. Investigating, found that

1. In the new site (swayamplus.education.gov.in redirected from swayam-plus.swayam2.ac.in) login is via email sent to our email id, and my previous email registration doesn't seem to work. Maybe because I had unsubscribed from course alerts?
   
   
2. After logging in with a fresh email, found that swayamplus is no longer adding a referer id to the course URL. There is no &ref=ABC123 part in the URL.

Since they are not sending referral IDs, we cannot report what they don't send!