Suddenly my C5 login path redirected to Wordpress after 2 years. WTF.

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I'm doubtful that this is a Concrete5 issue, I just hope someone can point me in the right question-asking direction.

I've had a Concrete5 site for almost 2 years with no problems (bridgetownmassage.com) and just today I tried to login to make some changes to my site and... it's gone. Not actually gone, but replaced by a super old Wordpress version of the site that is WAY out of date and ugly as sin.

The login page that was previously C5 is now default as Wordpress login. All my hosting, domain, etc. is up to date/active, but I'm totally at a loss on what to do and how to fix this.

It's probably some really stupid user (me) error, but I'd appreciate if anyone could shed some light on this for me.