Update version of angularprofiles for demo sites
e.g. dmaster.demo has a status message "Angular Profiles: Version 4.7.31-1.2.0 is installed. Upgrade to version 5.23-1.2.0."
As far as I can see this is controlled by an NG_PRFL_VERSION constant defined somewhere - probably in a config file on the server. Or if not then it falls back to "master" so possibly the local git cache on the server needs updating.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information