You will unlikely receive any help regarding this miner here, I haven't seen anyone talk about it and probably nobody from the active members owns ebang miners, I found this group on telegram
https://t.me/ebitminers which I don't know if it's an official group or not, but it seems rather active, try to reach out for help there, of course at your own risk, and be careful someone might send you an infected firmware or something.
But generally speaking, when the miner shows lost asics or a whole chain/hashboard is lost, it means a hardware failure, which is usually beyond fixing for the average joe, if you can return the miner -- it would be the best move in my honest oppinion.