Can I still use Pickit images when my subscription has ended?

Understand the usage rights for Pickit Stock images when you no longer have an active Pickit account

Yes, you can still use the Pickit Stock images you've inserted into your presentations and documents. If you’ve downloaded the image locally on your computer, you can still keep them and use them indefinitely for any purpose, commercial or otherwise. 

The only restrictions placed on photos, icons, and illustrations from the Pickit Stock library are that you can't claim them as your own work or attempt to resell them.