https://help.adalo.com/resources/pricing-options
How do I get additional storage?
Additional storage is available for $10/GB. As this time we do not have a way for you to purchase additional storage in your account, or see how much storage your apps are using. Your app will not see any interruption when you hit your storage limit. We will reach out to you well in advance to let you know you are approaching that limit, and work with you to get a plan that makes sense for your app’s growth needs.