"Still not working" doesn't convey much info. Describe what you're trying to do, or show some code.
I've download installed mormot following these steps:
Setup your favorite IDE:
On Lazarus:
Just open and compile the /packages/lazarus/mormot2.lpk package;
and mormot2ui.lpk if needed.
Then I write a simple program:
program Project1;
uses
mormot.core.basic;
begin
end.
Error: mormot.core.basic unit not found.