How to reset Data limits?

I'm using the Starter package but its stating i have used more than 100mb.  Since I'm having my data sent to Google Drive how can I download what's in Jotform so that we can reset the data and allow people to submit again?

You may download the submission data from the submissions view to Excel/CSV/PDF formats. If you want to download the files upload through the form submissions, you may click on Download All uploads button so that all the files uploaded to the form will be downloaded in a compressed file.

Since the storage space needs to be cleared, it is required to delete the form submissions. Once you have the backup of the form submission data, you may delete the form submission data.

Hope this information helps!