Are you in the US? I'm in the UK and have had an ad for it in the Google app for a while, but it always errors when I tap it on my phone. Believe it's US only

Are you in the US? I'm in the UK and have had an ad for it in the Google app for a while, but it always errors when I tap it on my phone. Believe it's US only which is why it won't work, but would love to give it a go. Did try a VPN but no luck still!