Can't even draw a line

Hello
I just installed Bricscad Shape and when i select units and click on create, it appear the axis with the guy standing in the origin, but in the moment i put my mouse on the window, it turns all to a light blue and nothing happens, i try to draw a wall and it marks me the distance i want it to be, but i see nothing just the light blue background. i already desinstalled the program and installed it again but its the same.

Thanks

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