Really it is something "FUNNY" that Xing system changed to restaurant payment system .Xing Payment system became like a restaurant .Although some restaurants have some ethical manners related to invoices after the client enjoy his eat .Xing trapping you in a free trial , after that it does not ask you if you are happy or not with its free trial .Suddenly it ask you to PAY "fake" invoices created by Xing itself .How is that ? Please think about it .Really it is something funny for a company Payment system became like a restaurant payment system .