We have a newly established 10.7.1 portal - behind a firewall and I'm having trouble connecting it to survey123.arcgis.com
I've followed the instructions Use Survey123 with ArcGIS Enterprise—ArcGIS Survey123 | Documentation
I've managed to publish a demo survey from Connect to the portal.
I can login to the survey123.arcgis.com and I can see the survey on my Portal.
But as soon as I get into any of the tabs it just sits there and sometimes gives errors. Tracking the traffic I'm getting a few requests failing. That when those requests are opened independently they work.
We've added https://survey123.arcgis.com/ to the cross domain in the ArcGIS Server admin
We've added https://survey123.arcgis.com/ to the "Allow Origins" in Portal settings.
Anything I'm missing?