even if your form is built by designer can put a test proj in a zip and send it to see.
this avoid many "shots on the water".

have you cut all these commands ?

_screen.closable=.f.
_screen.maxbutton=.f.
_screen.Minbutton=.f.
_screen.controlbox=.f.
_screen.Visible=.f.

a simple config.fpw

SCREEN=off
resource =off