Do you need to purchase Adobe Stock every time you need to use it?

My company purchased a few hundred dollars worth of HD footage using the standard license. My understanding was that I would that footage licensed to use whenever I needed...however, when I attempted to use it again, it says it was unlicensed. I only used the footage once so I didn't pass the quota of the standard license and there is no "time expiration" within the terms in conditions. Why do I need to pay for footage again that was already paid for? Thanks!