I keep getting a pop-up to sign into ArcGIS Enterprise/Portal whenever I want to add a map from ArcGIS Online/in My Organization settings/ArcGIS Insights, even though I'm signed in already. This only happens when I use the alias URL instead of https://<webadaptorhost>.<domain>.com/<webadaptorname>. I did add the alias in my GetAppID for arcgisonline and arcgisInsights in the portaladmin interface (arcgis/portaladmin/security/oauth/), but probably I have to do something else also. Can anybody help me further?
Thanks in advance