On the old site it lost all of my data and on the new site I can not log into my account! this sucks

I can not understand this at all. This is a very difficult read. How can I understand this?

Whats the difference between sufficient assumption and necessary assumption questions? I am struggling?

i thought we werent supposed to assume?

what does kicking up into the domain mean??? someone help

I am getting all these questions wrong in this module. Help!