why are reports disabled on encypted forms? Is your system very secure if I don't encrypt?

Please note that features such as reports are not available for encrypted forms. Some of the features that are not available for Encrypted Forms are: https://www.jotform.com/help/344-Encrypted-Forms-and-How-to-Use-Them 

1. PDF Downloads.

2. Reports (this includes downloading Excel and CSV files from within the Submissions Page).

3. Emails: Email Notifications and Autoresponder (usually emailed to the form submitters).