Hi Esc,

From what I can tell this is good apart from a minor issue with the route masters (https://wiki.openstreetmap.org/wiki/Relation:route_master) of the train lines. The new platform you added (https://www.openstreetmap.org/way/1299295128) was added to the superrelations, but those relations are meant to have all the variations of the train route not the actual route or platforms itself. The platform is just meant to be on the route relations which you added it to properly, (although in the wrong order!).

A quick way to check what type of relation is being edited is to look at the "type" key. https://wiki.openstreetmap.org/wiki/Key:type

type=route is the train route
type=route_master is all the possible train routes

I fixed it here: https://www.openstreetmap.org/changeset/154887482

Hope that helps! Have fun mapping :)