I am submitting a VAT return via MTD on Sage 50 Cloud Accounts. 

I have followed the guide:

Making Tax Digital for VAT - Calculate and submit your VAT Return in Sage 50cloud Accounts

When I reach the final submission, and select the drop-down menu for period submission, it is completely blank. Submitting my VAT with a blank period selection crashes Sage and doesn't submit my VAT return.

Please help?