I'm trying to publish a geoprocessing tool to ArcGIS Server from ArcGIS Pro, but am unable to since the server connection type is set to "User" in the latter and cannot be changed to "Publisher" or "Admin". When establishing the connection, I'm using the same admin credentials for when I publish from ArcMap, access the Server Admin page, etc., but for some reason Pro sets the connection properties at the lowest level and then grays-out the drop down user type menu--it's totally inert. Heck, the connection in catalog is even auto-named "admin on $SERVERNAME".
I've also confirmed that I can see the published services on the server, but they cannot be modified via Pro. Application is version 2.6.1. Issue was present before recent upgrade.
Any thoughts as to what I'm doing wrong? Thank you!