Iphone Mirroring not working

I updated my iPhone 14 to IOS 18.1 and tried to use iPhone mirroring on my24-inch, M1, 2021. When I opened the iPhone Mirroring app on my iMac a screens comes up that says "Your Phone on Your Mac" with the choice to either setup later or continue, the next screen says when I hit continue "Unable to Connect to iPhone", but before it says that there is another screen that flashes up for a second then does nothing and does not allow me to proceed to mirror my iPhone. Both devices are up to date with updates. I checked wifi, bluetooth, airdrop, and have restarted both devices. Is iPhone 14 compatible with this new mirroring feature? If so, I would really like to use it. I noticed AppleBestPaul says it won't work in the EU, I'm in the US so there must be something I'm missing in the setup??? Thank you.

If you are in the EU u won’t be able to use it