HS3 + TEMP08 + HobbyBoards Humidity sensor = a few problems

Hi, I am upgrading to HS3 and testing it with TEMP08 and a single HobbyBoards Humidity sensor connected.

I used HyperTerminal to run "INI" and "TMP" commands and TEMP08 recognized all sensors correctly:

Reading Sensors...
01 570000004CDDD626 DS2438 OK P V
02 9D0008018A28E910 DS1820 OK P
03 9D000000B6591326 DS2438 OK P H

Update interval = 00 minutes
Temp display = C
Serial # display = On
Wind dirn reverse = Off
Qty of DS1820=01
Qty of DS1822=00
Qty of DS18B2=00
Qty of DS2438=02
FRI 10:32:40
>
FRI 10:32:57
Reading Sensors...
Humidity #01[9D000000B6591326]=52%
Voltage #00=00.94V
Voltage #01[570000004CDDD626]=10.23V 05.14V
Temp #01[570000004CDDD626]=24.62C
Temp #02[9D0008018A28E910]=25.00C
Temp #03[9D000000B6591326]=26.06C
>

I shut down HT connection, launched HS3 and Ultra1Wire plugin automatically recognized and created HS devices for all three temperature sensors but ignored the humidity and voltage ones.

My questions:
1. What should I do to have the Humidity sensor to be visible in HS3?

2. Do I understand this correctly that plugin does not support voltage sensors (I need it for reading electrical current as I did before in HS2)?
Is there a way voltage sensors can be interfaced to HS3?

3. What is the purpose of Devices tab of the plugin and why there is a need to manually create 1-Wire devices there?
I am asking this because I noticed that HS3 devices are created automatically and graphing is based on HS3 devices and not the ones listed on plugin devices tab? It seems like a redundant feature.

4. I still tried creating devices into the plugin tab but was able to create only one (for TEMP08 internal sensor).
When I try to create second record I get an error "A system error has occured (more information)."
HS log indicates the following:
System.Exception: Unable to insert 1-Wire Device into the database. Please ensure you are not attempting to connect more than 9 1-Wire Devices to the plug-in. at HSPI_ULTRA1WIRE3.hspi_plugin.Insert1WireDevice(String device_serial, String device_name, String device_type, String device_image, String device_conn, String device_addr)

Thank you
Alex