I will explain the whole thing. The guy is bharat acharya. He owns a course site called bharatacharyaeducation.com. Why? Because sites like udemy pay only 1-2$ to course instructors per purchase. So, he created his own site.
You can check online reviews about bharat acharya. He has youtube channel as well. You can check it.
I got a discount for the course because I had purchased 3 of his earlier courses as well. That's why the payment link. Yes he's from Mumbai. Just pay it and contact me, I'll pay you within 1 minute in esewa.