Hi @rueben.tiow, thanks for your response.
Im using identifier first with passwordless using email only, i see no error message on the login but i see the errors in the logs. The login process is not stopped when the user inputs their email and clicks continue, it goes to the next step and waits for the code, even tho as you see on the logs the action indeed prevented the user from signup and the failed login also prevented the email with the code to be sent.
For the moment i change to custom html login and use the extensibility_error solution (found here) that indeed works, but that only let me show one error message for all actions errors.
I really would like to keep the New universal login.
If you need any other details let me know,
thank you!