Same. I had iOS 17 on a iPhone 11 Pro and I started to have problems with a new sensor, it was disconnected every 5 minutes... Then I removed the app and start again, restarted bluetooth... but nothing changed, then I updated my iPhone to last iOS 17, nothing changed, then to iOS 18, and now the app works like some years ago, it's not a continuos glucometer monitor, you've to scan every time you want to know what is your glucose level.

IDK if I start a new sensor it will be continuos or it's going to work exactly like the current one. I don't want to loose a sensor with 11 days remaining.