Hi there, this is Anirudh Gopalakrishnan.
On January 21,2025, I checked in at the gate with my NS Card at Dordrecht train station to board my train to Den Bosch via the sprinter to Nijmegen at 19:35 for the train at 19:58.
In the train, when the conductor checked my card, I was told that I had checked in through Qbuzz which is the regional bus provider in Dordrecht and not via NS and I was told to add the check out via uitcheckgemist and ask for refund from Qbuzz. But when I checked it, there was no check-in on Qbuzz.
I can say with surity that I checked in at the gate of Dordrecht station, next to the bus station , otherwise, I would not have been able to reach the platform to board my train.
Once the conductor checked my card, she checked me in but later I received an email stating I am receiving a correction fee for 50euros. I understand from the NS website that there will be a correction fee if there is no check in since it is considered as an invalid ticket. Is there a way to add in the check in option for my journey? It does not show up yet on “my journeys” on the NS website.
Is there also a forum where I could explain to them that I could not have gotten to the platform without checking in at the gate?
Is there different gates at the Dordrecht Central Station for different transport providers?

Could someone please help me with this issue?
Thank you!