With old (2014er) license plates have been checked!

Yes, you don’t think that happens to you, and then you forgot to get a new license plate because the reminder letter has unfortunately landed at the old address (parents) (+ these have forgotten to contact me), and I am currently in the stress of the exam, I didn’t think about it at all. The last 8 years it all worked out. So the (annually recurring) question: What is to be expected for a strain measure (especially money) if you have to I got a new license plate right after the shock. Now you read here partly, that makes sense to show this the next day at the relevant police department. Is there anything about it?