Even though incoming students can create a PID and password, access to the library's restricted resources—such as databases, eBooks, and eJournals—will not be available until the Registrar's Office completes an end-of-term/start-of-term process that updates student affiliation in the university system.
Access may also depend on factors such as the start date of your assistantship (typically by the first day of classes) or when your tuition is paid (which may occur after classes begin).
You can check your current affiliation by logging into OneCampus, search for the Manage Accounts category, and then click on Profile. Scroll to the bottom to see a list of your current affiliations. You'll need to see VT-ACTIVE-MEMBER, VT-AFFILIATE, or VT-RETIREE listed under Affiliations to be able to have Off Campus Access to Library Resources.
The library has absolutely no ability to change your affiliation. Contact your academic department for assistance. Students should speak with the Registrar or Graduate School.
An explanation of university affiliations is available online.