Thanks Shruthi Naomi for reply. I got it fixed, i was not having permission and due to that option was not coming.
Now, I am facing another issue. Below is my activity:

Here, i am hiding one image from my page. Now When i am hitting that page, Its always showing image, second experience is never occurring.
And, below is activity report:

everything coming as zero. Am i missing something or does it take time to reflect report. Do i need to add something (js) to my site page?