The issue that needs to be clarified is whether Apple looks at GPS data to determine where you are located when you attempt to configure the AirPods Pro. I could log in to my US Apple ID using a VPN and then download the Sony app and configure my hearing aids—all that from my location north of Montreal. But I don’t know if the Apple process is the same. Remember that when you log in to a different Apple ID on one iPhone, you must first log out of your Canadian Apple ID. If you have the lockdown feature set, you have to wait an hour before being able to log in to your US Apple ID. It’s better to turn off lockdown mode before you begin this process. You can reactivate lockdown mode after you’re done.
I am pretty certain that it's to do with your Apple ID.
It's would have been so much easier if nobody had updated to IOS 18.1 and that's the foirst thing they did often after buying the Airpods specifically to use them as hearing aids.
The Airpods do a great job as hearing aids running any IOS as long as it's not 18.1 and they are not geographically locked. The other "lock" they have is that they will not work as hearing aids at all if your hearing test shows severe or profound hearing loss. It's something to be aware of and I think Apple has had to use the locks in order to get FDA approval in the US.
If you haven’t updated your iPhone to IOS 18.1 you can still use the Airpods as hearing Aids with an older IOS without the geographical lock and for me with mild to moderate hearing loss they work really well. I've been using them for five or six weeks. They won't help you if your hearing loss is severe or profound BUT I do know of a few people with severe loss using them for the music, TV, Facetime and phone call features simply because the sound quality is so good. They might just want a break from their normal hearing aids.
If you are not on IOS 18.1 you can set them up straight away. If you have an iPad or an older iPhone that is running an older IOS you could set them up on that. You will need to download the free Mimi app to take a hearing test OR you can download your audiogram by taking a photo of it.
I have read that rolling back to and older IOS is no longer possible as Apple is no longer signing the backdate but I would love to put it to the test by restoring a back up of my iPhoine but I don't want to mess things up.