community members are obviously unable to help with changing how the forms work. If you require urgent support, please email Webflow directly: support@webflow.com, don’t forget to post the resolution here!
The project still has to be active in your account. If it is deleted for any reason, the default form submissions will go nowhere (users will see form error state). How many free form submissions are tied to account/project plan. See existing answers in the forum for more detailed advice.