You need to add the official Bromite F-Droid repository as a third-party repository either by scanning the QR code or adding the URL manually (copy the link from below image):
Always verify that the repository details are exactly:
Address: https://fdroid.bromite.org/fdroid/repo Fingerprint of the signing key: E1EE5CD076D7B0DC84CB2B45FB78B86DF2EB39A3B6C56BA3DC292A5E0C3B9504
Please donate to support development of Bromite and the costs for the build system.
BTC donations address:
ETH donations address: