Maybe you'll need a NoDvd patch or something, usually this "[1503]" means that. Try using some AlphaROM activators, one of them has to work, I had the same problem with another eroge and tried with all the Alpha activators until one worked, hope it works the same for you too.
could you please upload RELEASE[241008][RJ01269982][ぺぺろんちーの] ゴブリンの巣穴 戦国餓鬼道 patch.1聚楽第 [v24.10.25] link for dailyup or any else since mexa fikper is unavailable and rapid is only premium while katfile keep failing because the speed too slow and download time is up.