High End plugins problem. Can't update

Hi,
My website is http://www.hungerstrength.com. I was previously under a different domain called http://www.thoughtlust.com. I purchased high-end under thoughtlust.com and only transferred domains.

Recently I updated to the new wordpress and got a notification to update High end which I did. I had problems with my home page being broken and found another thread:
https://hb-themes.com/forum/all/topic/updated-to-2-0-now-getting-error-message/

I ended up deleting visual composer. When I try to reinstall the plugin I get a 404 error stating that hostgator cannot find the page. It is also asking me to update a plugin called essential grid.

I figure I might be missing something so I try to do a full reinstall of High end. I activate another theme and delete high end. Then I navigate to appearance > themes and go to the High End Theme. It will not allow me to download it and it asks me to purchase it again.

Can I get some help as to how I can remedy this? I have been able to reinstall high end using the zip file that I downloaded a few months ago.