I downloaded the zip file and was reading the instalation and there is a link to this https://www.socialengine.com/client for downloading the core and that link gets a page not found error.
Also, I sent to the client area via my account link and there is no file called core? is this another conffusing thing for newbies? Why does it say download the core and what is meant by the core?
The install (for fresh installs) shows the correct login https://www.socialengine.com/support/article/5145149/se-php-installing-socialengine as you mentioned the zip file and installing. I've answered your other question in your other thread. Please don't use multiple threads for the same topic.