Hello v_pozidis,
I realized the following in your project
You were still connected to the sqlite.db database. But you have to change it to MySQL which I have done in your project.
Just follow this screenshots to complete the process.
Also I hope you have the details when you registered with https://www.freemysqlhosting.net
Thus,
Server: sql9.freemysqlhosting.net
Username: sql9295
Password: fghfgSTCS
Port number: 3306
If you are still having problems, then send me the details from https://www.freemysqlhosting.net and let me put them in the project
thezimguy@gmail.com
Regards.
@thezimguy