Hi @Rudylucasdiaz Rudy,
Ok. I think I have everything working now.
We are now using localStorage
This means if the page is reloaded, the browser is closed or quit, the settings and password used info will persist.
We do not store the actual passwords in the localStorage but use their index number in the password array that you set and add password to manually.
You will also see that the Teacher has a bypass password. that can be used to reset ALL UI and password usage to default.
You should read up on localStorage so you understand how it works.
But any settings it store will not move to machine to machine. So if the page is used on tow machines. They each will have their own localStaorage.
This is also the same per browser on each Machine.
I really like the way this has progressed. The password stuff has been fun with a dash headache 
Please test this out and get back to me…