createDoiContact throws exception with "This sms number or email address is already associated with another user" for blacklisted users

[stkrelax]

if we try to createDoiContact for a user that has been blacklisted before api returns an exception:

Message: [400] Client error: POST https://api.sendinblue.com/v3/contacts/doubleOptinConfirmation resulted in a 400 Bad Request response:
{"code":"invalid_parameter","message":"This sms number or email address is already associated with another user. Please (truncated...)
Code: 400 Class: SendinBlue\Client\ApiException
#0 /var/www/app/tags/dev/vendor/sendinblue/api-v3-sdk/lib/Api/ContactsApi.php (985) :: SendinBlue\Client\Api\ContactsApi::createDoiContactWithHttpInfo

in the times before this updated the contact and triggered a new Doi sign in.

how should a blacklisted contact now be signed in ?