Hi,
I only see a couple things off. Like no submit button on your form, and your website being off center.
You mention your size has changed. I don't believe anyone can change that but you unless they have access to your VSD program or server. Anyway if you look in the preview mode now does your website look correct? If so go to settings> Standard Settings For New Webpages and make sure centered is checked and on left side make sure your homepage is selected as well and then save. Now go back to settings-resync website and let it upload completely, sometimes it's best to remove all the files off your server first and do a total re-upload. give that a try first. Please let us know.
If it doesn't look right in preview now you will have to fix before uploading, we can't change that fact.