Yes, MikroWizard is actively developed. v2 was released just a few weeks ago, and you can also follow the development on GitHub.

If you are getting an “Authentication failed” message, in most cases the credentials or connection settings are the reason. Please make sure API access is enabled on the MikroTik device and users is in a group with api access , check firewall restrictions, and that the username, password, and port are all correct.