If you wait too long, the app may try to do a refresh of your balances and won't be able to, so no funds at all will be displayed. Again, your funds are never lost. The app simply cannot connect to the blockchain to display them. If you still have the coin wallet added, follow the instructions above, except on step 2, go to you "receive" section of the app and at the bottom of the screen select "previous addresses". You will see there the addresses you used to receive coins previously. If you don't have the coin added, skip step 2. When getting the private keys of your addresses, import them one by one until the imported address doesn't contain any transactions associated with it.