The easiest way to increase your AI capacity is to adjust your plan. You have two options:
Increase Credits Within Your Current Plan: Stay on your existing plan (Essentials, Unlimited All Access, or Small Business) but select a version of that plan that comes with a larger AI credit allotment.
Upgrade to a Higher-Tier Plan: Upgrade to the next available plan. This not only gives you more credits but also unlocks additional features.
You can always see available plan upgrade options by following Upgrade My Plan buttons in your Storyblocks account.