Xamarin Forms Link-OS iOS BLE disconnect after few seconds

I'm pairing my app to the ZQ520 printer using Plugin.Ble (low energy). But after few seconds (20-30 seconds), the pairing stops. When I try to connect using the Link-OS sdk, it fails saying "Could not connect to device on address ..." .

It prints properly if I pair the device manually in the setting of the phone.
Does Link-OS support Low energy Bluetooth (BLE) ? If yes, does Link-OS need special setting in order to make it work ? ‚Äč

Thanks