Bitwarden icons on Android seem to be working for most people, so this is likely a client-side issue. Try all the steps below to see if this solves it:
- On your Android device, stop the Bitwarden app.
- Under Other Security Settings in Android, go to View Security Certificates and disable the expired Let’s Encrypt root certificate called Digital Signature Trust (or DST) Root CA X3.
- Ensure that you have the Internet Security Research Group (or ISRG) Root X1 certificate on your device (same menu). If not, you may need to download and install the root and intermediate certificates (see: Chains of Trust - Let's Encrypt)
- Reboot your device and open Bitwarden again to see if they icons re-appear.
If you are still having problems, use the Chrome browser in Android and to go to: https://icons.bitwarden.net/google.com/icon.png and then check the security connection (click on the padlock near the URL in Chrome - you should be able to view the status of the certificates in the chain, which may provide some clues about any issues encountered).