I tried to boot from Gotek with A500 and A1200 (both with Pistorm), with no success: I suppose the problem is my Gotek is DF1 (I reproduced the same behavior with WinUAE if the floppy is in DF1: white screen)
correct, ADF must be booted from DF0
Could you copy it over to a real floppy dk and try again from DF0?