How Do I restart A course?

I just finished a course called ‘Country Mapping’ by Azrael And I want to restart.
I do not know how to restart I’ve been trying things out and NOTHING works. Can someone please tell me how to restart?

on the web go to the course details and click the options button


look at this

I pressed that blue button but it just refreshes, so I pressed ‘get started now’ This is what happened.

So I pressed ‘go to dashbourd’ look at this!

It is not here!
I do not know what to do!

There is nothing!