Problem solved by the contractor! Apparently, everyone failed to mention to me that the login was at /site-manager, and that since the contractor updated their security settings, this became the sole point of access. Insofar as getting full control of all things connected to the website, the contractor is my go to and has all this information (which, again, was news to me). I cannot take full control of the site from the contractor as we have a contract, but to once I reached out to the contractor, they were more than helpful! Problem solved!
