Hello,   http://validation.eurofpl.eu/ site moved to another site https://www.public.nm.eurocontrol.int/PUBPORTAL/gateway/spec/PORTAL.23.0.0.5.19/gwt-detached-view.jsp?_portal_context=/gateway/spec/PORTAL.23.0.0.5.19:/PUBPORTAL/gateway/spec/PORTAL.23.0.0.5.19:TAC:1569974400000:0:1570003047186:0:undefined:undefined:&_view_id=IFPUV_DETACHED_LIST&_parameter_set_id=1&_dataset_info=.  I am not sure but I guess pfpx uses this source for validating flight data. Are the developers