Parakey App Reviews

So I came to Stockholm and this is the first time I’ve come across this, so obviously my first time using it. This is incredibly easy to use, just Bluetooth, so even someone incredibly technologically stupid could figure this out. I am wondering if this can come to the US because I would buy this in a heartbeat. Anyone with a rental property, or heck, anyone who is slightly unorganized and loses their key somewhat frequently would greatly benefit from this. I assume the bad reviews are from peop

Your access is tied to a a single email address which you cannot change. So if different companies send you different access keys to different emails you are screwed. And if you ever want to change your email address you are screwed. So most people will hate this.