Login stops working

I’d like to use this plugin simply to rename wp-login to /login, and nothing else. But when it’s enabled links stop working in the dashboard e.g. ‘Install’ when attempting to add a plugin.

And the login page just refreshes when I hit login. Only way to get into the site is to delete the plugin with FTP.

Any suggestions?

https://www.ads-software.com/plugins/rename-wp-login/