So i was riding the metro in Frankfurt and did not know that after i purchased a ticket, i needed to get the ticket stamped prior to riding. Because of that, i was given a ticket for 40 Euro. Unfortunately, i now cant find the ticket i was given. I was told that i can pay the ticket online.

So my first question, does anyone happen to know the website where i can go to pay the ticket?

Will they eventually send me something in the mail? If for some reason i cant figure out a way to pay the ticket will my passport be revoked or might i be banned future entrance in Germany?

Thanks.