I didn't get certificate

I completed 4/8 lessons but don't know how to get certificate,so someone please tell what I will do.

I completed the Effective Communication Skills Development course on MindLuster and found it very useful!

The course is loaded with valuable points

thank you this course is very helpfull

I already finished the course but not yet received the certificate

when I try to watch the video, it says that I have to sign in. However there is not an option to sign in but I can only learn more. what do I do

Cetificate issue

Complete all lessons and learn a lot

I complete all 7 lesson, know how i get certificate