Unable to purchase UK USB hub from the store

I’m trying to place an order on the store, but even though the UK plug option for the powered USB hub isn’t greyed out and it says “Added to bag” when I add it, it doesn’t appear in my cart. Is this unavailable (in which case it should be greyed out) or is there a bug stopping it from being added to the cart?

It is out of stock – you shouldn’t be able to add it to cart.

I don’t have an ETA for getting these back in stock unfortunately.