Poise will not accept keyboard input. I tried with hotkeys enable and not enable.
Try renaming a pad in FLSTUDIO. I've turned typing keyboard to piano in FL on and off as well without positive result.
The issues has been resolved. In the wrapper under the FL wrapper setting for GUI for version 12.4.1. Keep focus needs to be deselected to work even if the the option to allow the plugin to handle keystrokes before the host does is on (which is on by default)