Recorder wont capture window

I am developing an automation program to process invoices on a system called Protheus.

There is a step where i have to capture a window just to click a button on it, but the recorder don't even recognize the window.

This is the window that the recorder don't capture

The Recorder capture the window behind the one that i need.

On the task i will input a value on one of the fields on the left and then click on the top-right button. I can input the values with the simulate keystrokes action, and navigate the fields with Tab or Enter.

I tried using Image recognition too, the bot gets the button, but doesn’t click it.

I can input the values that i need on the left fields using the simulate keystrokes action, and navigate the fields using [TAB] or [ENTER], but when the bot navigates to the button, enter wont work.

What else can i do to solve this ?