Incorrect redirection

Hi guys, how are you?

Since I’ve installed the plugin, I do the follow:

Change: https://mysite.com/wp-admin
For: https://mysite.com/newadmin

But, something strange is occurring. If I type any other address (including inexistent URLs) I am always redirected to /newadmin. So, the plugin is not hiding my admin URL, but exposing it, in the end of the day.

I did a test and have disabled the plugin, and I had these results:
/wp-admin: normal access
/any other URL: still trying to redirect to /newadmin and now the browser showing the error “too many redirects”.

Any tip here guys?

Thanks in advance!