Extracting a quarters VAT

VAT Quarter period are April, July, Oct, Jan.
No Vat Returns have been filed .
Period entered was 01/02/15 - 30/04/15.
Pressed the recalculate.
Every thing went to Zero.

What am I doing wrong.

Do you see vat return marked submitted instead of actually been filed under vat reports?

no, none has been submitted todte

i would suggest check vat setting again, date , type , rate etc?