The Library will be upgrading Primo starting August 22 for approximately 3-4 days. During this time, some Primo functions will be unavailable, including: 
Searching, viewing your account, and placing holds or recalls should all be unaffected by the upgrade process, but in the event that there is a disruption, TRELLIS will still be available.
Once upgraded, Primo will include a number of new features:
Thanks for your patience during the upgrade!