How can I set the extend in get data map?

[GobernaciónBoyacá]

I wanna start exploring this application and the problem is that i can not set the extend parameter. I  can set the parameters about resolution quiality, but I can't set the extend parameter because the button "doesn't works", I dont know if something is wrong with the application. I saw in a video tutorial that when you click on the "set extend" buttom, inmediatly appear a square that allows set the extend, but in my case that square doesn't appear, even i can not change the values typing by my self

I'm using a trial version. 

thanks

[ThomasFuchs]

Hello Diego

If you cannot see the rectangle after setting the extend, please try to zoom out.

[AnjakaRandrianaivo]

I have the same problem, I tried to zoom out but nothing happen. I used leftShift +  left mouse key and a red selection appears but it is not the selection I need. Is there another way to do the selection?

[Luiz_AmadeuCoutinho]

I got a similar problem on 2017 version . For me the problem was the Coordinate System - Check here get map data ok box greyed out 

Which version are you using and what the Coordinate System used?