Has "Phone Box Gadgets" closed down for good?

The grille has been down when I've been past recently, but that doesn't automatically imply it's permanently closed.
There's a paper sign on the grille that's showing the back, which I didn't notice when I took this photo:
https://photos.app.goo.gl/JuW18HSyJXuxChz39

The facebook page (see facebook tag) is also inaccessible to me, at least when not signed in.

I think the paper sign, if flipped over, would give us an answer.

Relevant node:
https://www.openstreetmap.org/node/11293224505