It wasn't a paywall or region block, it was a 404 error, ie a bad link. However it's working now - on my PC anyway, it could be that some ad blocking on my phone did something weird and Google threw up a 404.
That doesn't work for me either. It's possibly a general phone thing, but I think more likely it's my phone's configuration. Privacy focused custom ROM, ad blocking DNS and a browser that does it's thing also.