If you'd like to upgrade your plan, please visit Wix Site Dashboard (Business Manager) > Lib - UI Components > Unlock All Components.
From here, you can see the current offerings and pricing of the Library plan of your site.
FAQs:
What does the upgrade cover? All components access + priority support.
Where can I use the Pro components? On the same site, you upgraded Library Pro.
Can I transfer my subscription to another site? You can't transfer but you can share the subscription to another site(s) that you owned on the app dashboard!
Do you offer a refund? No, we've provided free component access before you upgraded to a plan.
I don't see this tab on Wix dashboard! Why? Please visit Wix Dashboard > Apps > Search "Lib" and install the app first.