Remote preview ID?

I'm trying to use the remote preview but instead of starting the game it asks me for the remote preview ID, but I don't know what it is

When you start Remote preview in the editor, it generates a link like this:

https://preview.construct.net/#qutzwyhq

That's the ID, you can simply copy/paste the entire link.

Ok, usually I inserted the link into the browser and the game loaded, but now when I put the link into the browser, it asks me to write the ID in an empty field and press Ok, I don't understand why this extra step, in any case thanks, all I had to do was paste the last part of the link into the empty field and press Ok