Would like to downgrade back to starter/free, will my forms remain active?

I still have forms being used but I'd like to revert to the Starter Package.  Is this possible?  Received a "cancel" notice.

Your subscription was set to autorenew but the payment failed.  This caused the subscription to be cancelled not your account.  Since your monthly usage looks quite low, a subscription does not seem necessary at this time.

Your account is, however, over the submission storage storage limits.  Before your current subscription ends, I would recommend downloading any data you need to retain and then deleting your older submission:

https://www.jotform.com/answers/494860-How-To-Delete-Submissions-and-Keep-the-Form

Your forms will remain active as long as you are under the free account limits.