Everything was fine until customers started upgrading to the new iOS versions.
So far we see this problem on all iOS devices on iOS 13,14 and 15 versions.

This is the code:
IConnection connection;
try
{
connection = LinkOS.Plugin.ConnectionBuilder.Current.Build($"BT:{connectionString}");
}
catch (Exception e)
{
Logger?.LogError(GetType(), e, "ConnectToPrinter", $"selectedPrinter {Printer?.Name} ConnectionString {Printer?.ConnectionString}");
ReportSingleError($"Cannot create connection to the printer {Printer?.ConnectionString}");
return null;
}

try
{
connection.Open();
return connection;
}
catch (Exception e)
{
Logger?.LogError(GetType(), e, "ConnectToPrinter.Open()",
$"selectedPrinter {Printer?.Name} ConnectionString {Printer?.ConnectionString}");
ReportSingleError($"Cannot open the connection to the printer {Printer?.ConnectionString}");
return null;
}

StackTrace:
at LinkOS.Plugin.ConnectionImplementation.Open () <0x107cc3f50 + 0x000e0> in <8d7e460cb3074051b7ce878ce3d09d03#8f4cd2027c1161842fd57cffbefad8fa>:0
at Mobile.Print.iOS.Zebra.LinkOsDriver.ConnectToPrinter () <0x107caa968 + 0x000ff> in <7a1a98ba83924c4abe7290163fe881aa#8f4cd2027c1161842fd57cffbefad8fa>:0