Ecovacs device verification succeeds but config entry immediately requires verification again

The problem

After adding the Ecovacs integration, Home Assistant requests device verification by email.

The verification code is accepted and Home Assistant reports that reauthentication was successful.

Immediately afterwards, however, the Ecovacs config entry cannot authenticate and shows:

Device verification required

In some attempts, a second Ecovacs config entry is created.

Deleting the entries, restarting Home Assistant, and adding the integration again produces the same result.

What version of Home Assistant Core has the issue?

core-2026.8.0b2

What was the last working version of Home Assistant Core?

Unkown

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Ecovacs

Link to integration documentation on our website

https://www.home-assistant.io/integrations/ecovacs/

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Config entry '<redacted>' for ecovacs integration could not authenticate: Device verification required

Additional information

The issue is reproducible on a fresh Home Assistant Green installation.

The device verification flow itself completes successfully and Home Assistant displays that reauthentication was successful. However, the config entry immediately enters another reauthentication state.

Home Assistant Core: 2026.8.0b2 Home Assistant OS: 18.2 Supervisor: 2026.07.5 Country/region: Germany