Just adding my experience… Also have the httpstatuserror: blocked message it’s been a few days now too so don’t think it’s a quota issue.
I can still access the app and login fine to bmw.
When I reconfigure the HA integration I enter the password and the captcha token and it shows login success, then I see the “httpstatuserror: blocked” then after a couple of seconds the error in the integration ui changes to “Failed to setup: login requires captcha validation”
Debug:
2025-09-29 07:26:03.609 DEBUG (MainThread) [bimmer_connected.api.authentication] Authenticating with refresh token for North America & Rest of World.
2025-09-29 07:26:03.812 ERROR (MainThread) [bimmer_connected.api.authentication] MyBMWAuthError due to HTTPStatusError: invalid_request - The request is missing a required parameter, includes an unsupported parameter value (other than grant type), repeats a parameter, includes multiple credentials, utilizes more than one mechanism for authenticating the client, or is otherwise malformed
2025-09-29 07:26:03.813 DEBUG (MainThread) [bimmer_connected.api.authentication] Unable to get access token using refresh token, falling back to username/password.
2025-09-29 07:26:03.813 DEBUG (MainThread) [bimmer_connected.api.authentication] Authenticating with MyBMW flow for North America & Rest of World.
2025-09-29 07:26:03.813 DEBUG (MainThread) [homeassistant.components.bmw_connected_drive.coordinator] Finished fetching [email protected] data in 0.205 seconds (success: False)
2025-09-29 07:26:03.813 WARNING (MainThread) [homeassistant.config_entries] Config entry '[email protected]' for bmw_connected_drive integration could not authenticate: Login requires captcha validation