Plugin needs to be updated, site down, no where to login

My site jesslizama.com has been down for many days now. I contacted both Blue Host and Mojo Marketplace who said I needed to contact WP to have them update the plugin for my site, so that I may log in. I’m unable to log in, I’m unable to post anything, I’m unable to do anything on my site. How do I contact WP to update this ‘plugin’ so that I can log into my site and update it? I upgraded to the business pro account to have support when things like this happen and it’s been over a week now. Thank you!