[RM2K3] CONFIRM BUTTONS ARE NOT WORKING

After a few weeks I came back to my work on RPG Maker 2003, confirm buttons (Z, Space, Enter) are not working.

I researched some stuff, but none has actually worked for me:

- Restart Windows 10;
- Run as Admin/Compatibility;
- Reinstall RTP;
- Keyboard tool made by Cherry;
- Close everything else before start working;

Also, older editions of RPG_RT are not working as well.