I can try to help but I need more information. Were you using the FormsCentral AIR application or were you using a browser? If browser, then what browser/version? What Operating System are you using? Do you have more than one account? Does more than one person have access to your account?
Any and all information is helpful.
Jeff - thank you so much for the response. I discovered the cause of the missing forms - I was not logged into the correct account. Once I discovered that, I was good.