Due to the slug change in latest update of demo import plugin. We are pushing updates, but it will take some time to pass through review process.

It is a small fix by the time we push update.

Alternatively you could drop us your link and login details via mail. We will do that.
Location: Theme folder / functions.php

Fix: Just remove below line from functions.php.

$default_settings['menu_slug']   = 'pt-one-click-demo-import';