Paired BLE connection to iPhone not working when Apple Id region is USA

Hello, I'm using the iPhone as a BLE peripheral to access the ANCS service.

First I'm pairing my central to the iPhone using my iPhone BLE app.

Then supposedly I no longer need the iPhone app, and with iOS 12 I am able to connect to the iPhone BLE and to the ANCS even when no BLE app is running (or installed).

The problem is that the connection to the iPhone when no BLE app is publishing only works when using my Apple Id which is configured to region Israel. When I use another Apple Id configured to region USA I am not able to connect to the iPhone.

I have tried this with both iOS 12 and 11.4.1.

I am able to connect to the iPhone when I set my app to advertise in the background, but this is not optimal from both security and perhaps battery aspects.

Is this some kind of privacy/security protection required in the US/other contries? Is it some other setting of my Apple Id?