How long does it take to turn on?

It looks to be working. https://screencast.com/t/JD7IgByw

If you are logged in you’ll see the normal site.

Thanks for the speedy reply. I didn’t know I had to log off.
But, omg, my tabs and everything are showing. That’s bad. Is that the way it’s supposed to be?

“But, omg, my tabs and everything are showing..”

Is this true? That is, does it really take a snapshot of your own personal browser, including your labelled tabs and so-on ??? So does it therefore upload a screenshot from your browser? Confused about how this works and would like some clarification.

I suppose the opacity of the overlay is changeable?

No this is not true. It takes a snapshot if your site using the WordPress.com snapshot service. You can upload you own images if that does not suite.

Yes if you know css you can change the opacity.

Thanks for clarifying that.

No problem!