Version 3.3.0 removes shielding. You can still see your shielded balance and history, but to unshield the funds, CryptoX Concordium Wallet must be used.
Also, the app now suggests installing CryptoX Concordium Wallet. No need to create a new wallet – just import your backup file into CryptoX Concordium Wallet, and you’re good to go!
Google Play [Mainnet]
GitHub release with APKs [Testnet, Mainnet]