Glad you fixed it.
About shipping / billing information it is asked during the checkout process.
You'll be able to see them in your shop back-office when orders are placed.
yes there is a way, if your registrar/DNS do not support it, instead please follow this tutorial to use Cloudflare Nameservers (FREE)
this will give you better DNS management that what you have with Network solutions and you can even serv your root domain this way over ssl!
With ABSOLUTELY no details provided I can't help you ...
Based on the very few words provided all I can recommend you is to restore a previous version of your page