Thank you Geoff, I tryed again few hours later and everything worked! Sorry
if I did write it only on the facebook page and not here.
But now I have some problems, I hope you can help me here:
1. I want to add some information to the ticket that is sent, can I do that
directly from the event calendar ticket plugin or do I have to edit the php
source file? (in the last case what strings do I have to edit?)
2. When I use the bank transfer method payment (from woocommerce) I want
the ticket to be sent only after the payment has been checked by me and not
automatically released by the system. How can I do this?