External Email Provider - Mandrill (Invalid API Key)

So I followed up the documentation to setup external email provider with Mandrill

I have an account also an API key.

When I set the API key and click “Send Test Email” it says that the email is sent successfully.
image

When I open the logs there are two logs there:

And the error log looks like that:

I cannot understand why, for sure I am setting the correct API key which is from Mandrill.

Also one think I noticed when I am setting the API key is that:

I am copying the API key from Mandrill, then I am pasting it in the “Custom Email Provider Settings”

And the input looks like that:

When I click save it becomes:

(Just check the length of the first image and the second)

I don’t know if that is the problem or just Auth0 saves the API key in the database and after that makes the input value just to be equal to hardcoded “********”.

Seems like the problem is somewhere on Mandrill side OR there are some additional steps required which are not specified.

Because I made an account with the Sendgrid email provider
and everything there is working correctly, the email for changing password is send and there are no errors in the auth0 logs.

Thanks for sharing that with the rest of community!