Overkiz intégration : "account already configured"

I have Sauter heaters and Thermor bridge which were responding well with Custom integration.

I just updated HA core and custom integration was removed.
When I want to add my account in core integration, I have a message “account already configured”.

I tried with an empty account and i have " invalid authentication" as long as I have not connected thé bridge to the account.
When the bridge is linked to the account, i have " account already configured" again.

Any Idea ?

Do other users get this integration working well?

Problem solved …

I looked into source code.
I already had the integration installed, but disabled.
That’s why the message.
The bridge ID was already registered as unique ID for this hidden integration.

Regards