The two most common solutions to this issue are:
Login details
Are you are logging in to the app with your staff credentials? Campus log ins are linked to individual smartcards so logging in with your old student ID will bring up your student details.
Reinstalling/Cache clearing
If your staff credentials still bring up your student ID, try deleting and reinstalling the app and logging in again with your staff credentials (this will clear the cache).
Further assistance/information
NUIT have information about the smartphone app available on the following web page: 'NUIT - University App'.
For any further assistance with the Newcastle University Smartphone app please contact NUIT by visiting their website, emailing them at it.servicedesk@ncl.ac.uk or telephoning 0191 208 5999.