What you would need is the latest Abbott Libre app.
Why?
I only use LibreLink to start my sensor and then Force Close it.
I keep it in case xDrip+ reports a weird reading so I can confirm whether it is xDrip+ or Libre that is misbehaving.
But there is no reason to have the absolute latest version of LibreLink to do this - just a version which can start the Libre 2 sensor.
There are a number of different approaches to using xDrip with Libre 2 without a separate transmitter. These only work with the European version of Libre 2. It does not work with thebUS or Australian version.
The OOP2 version worked first time for me so i didn’t bother investigating patching any official apps.
There have been reports of problems, especially with Samsung phones. I don’t know if this is because Samsung is the most common smart phone manufacturer so statistically more likely to have issues or whether it is because Samsung Bluetooth is renowned to be unstable. I avoided Samsung when renewing my phone last year.
I have no faff with xDrip+ and, as I mentioned, calibrate it daily for peace of mind.