Are we able to extract responses gathered from Forms after the end of subscription?

2. Able to extract responses gathered from Forms after the end of subscription

Please note that free account has submission storage limit of 500 submissions. When you cancel your subscription and your account is downgraded to free plan, all over quota submissions in excess of 500 submissions will be deleted automatically. 

I would suggest you to please export your submissions before you cancel subscription. The following guide should help you: https://www.jotform.com/help/374-How-to-Export-All-of-Your-Data-at-Once 

 Hope this helps.

Do get back to us if you have any questions.