You cannot recover the wallet with your seed?
Is your seed the correct one?
Do you recover any addresses at all?

If you have the correct seed of the wallet that contains the address with your Qora coins, then when you launch the application for the first time it will ask you if you want to create a new wallet of recover from seed, there you will select recover from seed, enter the seed, set a password and it will recover the addresses and the coins in this wallet.Wait to be fully synchronized and then you will be able to use them again.