Which Network Connection is used on Windows Mobile 6.5.3?

We have devices running Windows Mobile (Windows Embedded Handheld) 6.5.3 and a .NET Compact Framework 3.5 application using the Rebex HTTPS Library Version 2019R3.

We register the Library using the following code:

HttpRequestCreator creator = new HttpRequestCreator();
creator.Settings.AutoConnectToInternet = AutoConnectType.Enabled;
creator.LogWriter = new Rebex.FileLogWriter(…);
creator.Register();

The devices can establish two kinds of network connections: WLAN (802.11n) and WWAN (2G/3G). On a device, where both network connections are enabled and connected, only the WLAN connection is used by the application, as intended.

After disabling WLAN, the WWAN connection is used. After re-enabling and re-connecting WLAN, this one should be used again (instead of WWAN), but data is still transferred via WWAN.

After restarting the application, only the WLAN connection is used again, as intended and observed before.

Questions:

1. (How) Can Rebex tell me, which connection is currently used?
2. (How) Can I change the connection used via Rebex?
3. Why does the Rebex HTTPS Library stick to WWAN, after WLAN was disabled and re-enabled – and does not use WLAN, as observed after application restart?
4. (How) Can I “reset” the Rebex HTTPS Library to use WLAN again, after having re-enabled it, without restarting the application? (Creating and registering a new HttpRequestCreator did not help.)

Can you guys help us?