404 Not Found Login URL

For the past week, I have been experiencing an abnormal amount (100/day) of random login attempts to my site via foreign IP addresses. I’m receiving the corresponding emails sent via a site plugin.

The aforementioned attempts have locked me out of my admin portal.

Moreover, I get a “404 Not Found” error when I attempt to access the URL for the admin portal; I have neither moved/changed the URL (link included above).

Any and all assistance/suggestions would be greatly appreciated.

Thanks and best,

Kcapo442

The page I need help with: [log in to see the link]