Hi,
good to see you on the Rocket Form Builder support forum. Please read this and follow these guidelines before opening a new thread:
If it's a bug, please report it on Github (link below) and create new issue in order to follow better, but make sure you download the latest version from Github first and check if your problem still exists with that version.
https://github.com/Softdiscover/rocket-form-express-wordpress-form-builder
Best,
Softdiscover