Dear Lubov,
as I can see from the pictures, the tool is already connected to the server. If there is no connection, it would show the section "Execution" and "Position" as greyed out.
You should be able to use the tool as usual. If you like to place an order, use the "Execution" area.
If I could not answer your question, please concrete your problem and let me know.
Best,
Carsten