[openrailwaymap] No visualizations are shown

When I use the openrailwaymap, none of the visualizations show up on the map. Infrastructure, Signalling, Max speeds, Electrification, I can check every one of them, but I am only seeing the B/W background map. I have this in Firefox, Pale Moon and IE. Is this something on my end or is there something wrong serverside? Regards, Maarten