Lost acess to my WP panel

Hi,

I’m taking over an already pre-designed site and I was trying t install the multi-site option. I inserted the relavent code successfully and had no problems there. When I went to set it up in the tool —> networking menu, It told me that the site address and wordpress address were different and had to be the same. I thought that was a weird since I believe we are bot hosting the site on WP so i change the wordpress address from betterboys.org/wordpress to just betterboys.org. This did not not work, so i changed it back, but now the site is broken and WP won’t even allow me to access the admin panel. The site is still up but all the WP styling on not functioning. Any Suggestions?