Apple id not UK - can't use Ring?

I bought Ring alarm and loads of accessories. But I can't download "Ring - Always Home" because "your account is not valid in the US store" (meaning US App Store on iPhone). It seems I have to change my apple id country to be able to. I moved from US to UK 14 months ago and everything else works fine. My apple id is linked to loads of accounts and it seems I would have to cancel all of them, change country and download and set them all again. Is there a solution that will let me use Ring in the UK without changing my entire Apple id identity and not just ship the alarm system all back to the Amazon store?