Just trying to amend some seats using Trainsplit for a journey I'm making from Redcar to Manchester in July and whilst it's happily issued seat reservations I cannot seem to amend the allocated seats to the ones I'd prefer. When I try and confirm my changes on the seat selector I'm getting a "Something went wrong" warning and the technical details say: "Received HTTP UnprocessableEntity". Screenshot below:

I've tried it on a different date (same route) and get the same error. So is it just me or is something broken at the minute?

I've tried it on a different date (same route) and get the same error. So is it just me or is something broken at the minute?