I do not seem to be able to load any layers in ArcGIS Online. This goes for datasets I have uploaded and even basemaps. For example, in a brand new map project, I click the 'Basemap' link, and choose something from the list of available basemaps, and a second later a box appears onscreen: "Error Basemap Topographic is not available."
It's similar for my own datasets. When I click the add link for any of those I get this message: "Error The layer, [layer name], cannot be added to the map.
I have tried using different browsers and different user accounts in my organization. Any advice? Thanks!