Why am I out of space when I have no submissions?

I only have one form, and there are no submissions, but I'm out of space.

The form is no longer displaying on my website. Is this because of the disk space issue?

How can I free up space?

Thanks

Hi,

There was a mistake in your uploaded files. I have corrected it and your problem has resolved. Please contact us if this problem occurs again.

Thank you.