WP – Staging working issue

Hello,

Yesterday i have install wp staging and start to duplicate my web site.
Today i can see that proccess is finished.
But if i open WP staging it look like this: http://prntscr.com/qqrsst
I have try to remove and install plugin again, but it did not solve issue.

Now i cant remove my stagging web site too.

Is anyone have this problem before?.

Thanks