C̶u̶r̶r̶e̶n̶t̶l̶y̶ ̶N̶e̶o̶s̶ ̶c̶a̶n̶n̶o̶t̶ ̶b̶e̶ ̶i̶n̶s̶t̶a̶l̶l̶e̶d̶ ̶o̶n̶ ̶U̶b̶e̶r̶s̶p̶a̶c̶e̶. For Uberspace, the suggested tutorial is currently incomplete, see the comments section there for my supplement. Standard-Procedure for installation (from the Neos-Docs) is not sufficient on Uberspace in the first place.
See also my post regarding current issues (workarounds inside).
So it is possible to make a fresh installation at the current time (with Gd at least), it’s correct that it is installable on Uberspace.