Bitcoin uses a system where it's recommended to not reuse addresses for security reasons. Because of this, D'CENT Wallet manages 15 addresses and shows the first one by default for your convenience.
D'CENT Biometric Wallet, which uses fingerprint authentication, might display a different address in the D'CENT App because it uses an older method. But don't worry, even if the address looks different, it's still one of the 15 managed addresses and your assets are safe.
Note: You can view all 15 addresses by tapping the "Receive" button in your Bitcoin account and selecting "View all BITCOIN Addresses". You can receive Bitcoin assets to any of these addresses.