Hey Collector team,
I'm presented with in error when trying to specify the URL to an instance of ArcGIS Enterprise version 10.7.1 on an iPad Pro - seems like a pretty generic error, which states that "the server you are trying to connect to (tss-Prairies.esri.local) was using an un-trusted certificate... I have set up certificates on the server though as part of the install, it is a single server, essentially a base deployment of ArcGIS Enterprise (on Windows 10). Any tips or ideas of why I might be getting this error? Could it be that this device needs to be put on the network that the server is located in?
I tried the workflow on my iPhone 8 and got the same error.
Any tips would be greatly appreciated! 
~Hannah