Support & Contact – De Lijn Subscriptions After sales help What should I do if I’ve forgotten my MOBIB card (or season ticket)? Published on February 11, 2020 08:13 If you don’t have your season ticket, reduction card or proof of identity on you? Then buy a valid ticket. That way you avoid a fine. Any questions about this subject?Fill in this form. Related articles How much do the fines cost? What should I do if I my pass has been lost or stolen? How do I apply to work at De Lijn?