Appealing a judgment by an employee while the period allowed for appeal has passed

I have 14 months' salary pending from my previous employer. I filed a case in the Abu Dhabi labor court and received a judgment from the First Instance court for only 25% of the claimed amount.

Due to a system issue, my service request for an appeal (made online) didn't go through and I was finally able to lodge an appeal at the Enjaz center in Musaffah 6 days after the 15-day timeframe for labor case appeals.

I have now received a trial note stating that I have forfeited the right to appeal. No reason is mentioned in the trial note.

All my life savings are tied up with my previous company so I would really appreciate any help on how to move this forward and get the money that is owed to me.

My previous employer has been manipulating WPS which may be why the amount was so low in the first place.

Please respond!