pay per view how to display the currency in euro


I ve installed the plugin “pay per view”

I changed inside the settings the currency in euros and there the changes are made.

But on the website, it’s the “$” that is displaying.

How can I change that in € please?

Another question,

when a person surscribes to see the content during one full day or more, and he/she has to sign up on the website.

Is it the login and password that make remember this person to display the content only the time who he/she payed for?

Thanks for your answers