I’m in an appeal as well on another issue not related to the gold card.
They will drag it out and drag it out in hopes of exhausting you and hoping you will go away. In my case they have dragged it out over a year using technicalities and straight out ignoring my letters. I had to get the control yuan involved to move it forward and the original agency found yet another technicality to deny me
I hope you appealed using Chinese and their special appeal form or it will get rejected for those two reasons, 3 months later as they will sit on it. I’m going to go to court if it gets rejected again, its a $2000 court fee so not too expensive and they will provide a translator free.