[PM-38801] `Congstar`: passkey does not work

[WebworkrNet]

Origin

Native Application (non-browser app)

Web URL or App name

sso.congstar.de

Passkey Action

• Creating new passkey (Registration)
• Signing in (Authentication)

Build Information

© Bitwarden Inc. 2015-2026

Version: 2026.4.2 (21562)
📱 samsung SM-A176B 🤖 16@36 📦 prod
🧱 commit: 2e88a41
💻 build source: bitwarden/android/actions/runs/25866701011/attempts/1
🦀 SDK: 2.0.0-6825-release-hotfix-v2026.4.1-bwpm
🌩 Server: 2026.5.0 @ EU

Additional Information

Passkey: Congstar presumably does not support third-party providers (like Bitwarden) and only allows a single key to be stored.

In the past, however, creating and logging in using Google's passkey worked without any problems.

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.

[bitwarden-bot]

Thank you for your report! We've added this to our internal board for review.
ID: PM-38801

[WebworkrNet]

The login domain is used by the following apps:

• ja! mobil
• Penny Mobil

(This list is not exhaustive!)

[WebworkrNet]

The following apps probably also use the login domain: https://play.google.com/store/apps/developer?id=congstar+GmbH.

[WebworkrNet]

To the best of my knowledge, both Congstar GmbH and Congstar Services GmbH are subsidiaries of Deutsche Telekom. They use the same mobile network as their parent company. It can be assumed that the Passkey architecture is consistent behind the scenes, even though different domains are in use.

See also: #7046,
(PM-38800 Deutsche Telekom: passkey does not work).

[WebworkrNet]

See also:
https://bugzilla.mozilla.org/show_bug.cgi?id=2046255.

[WebworkrNet]

In light of the developments in #7046, I suggest we wait and see what our colleagues at Mozilla come up with.