Notes disappear after reloading (notes not saved)

Hey there!

As a webdesigner i really like a tool to let my customer pin a note anywhere on a page so he can easyly tell me what/where to edit. This is helpful while construction of the website.

I tried installing the plugin and added some notes for testing.

But after reloading the page/changing sites/navigating the notes disappeared.
Any help for this?

Best wishes
Arne