The cgi file is not accessing the database correctly. Found useful stuff. I will use them next time to complete the signup page. Worked on database handler and connecting to the database. Was able to connect to the database correctly and be able to do some queries.
Next goal is to make that login more secure and stable.
Maybe the fact that we did not do something right. Did some research on session IDs and how these work. Created the login.cgi file, which does not work yet. We tried to use cookies but did not manage to get it to work properly. Some simple and some more complicated queries to the database.