If your wallet is still locked you should contact support and if support is not responding, I can check the error and guide you through on how to restore your funds. PM me.
Next time, you should go to your address and tap on scan addresses. It will automatically scan your addresses and if any of it has funds it will now show in your balance.
It is possibly you sent your bitcoin to a bitcoin cash address( which should have notified you as invalid bitcoin address) but if your bitcoin was sent to your bitcoin cash address, you will not be able to restore your bitcoin which is a lost fund.