I'm new on SEO and recently redid this my website.
This website is a local business that just sell around my city, so I started linking the website on listing sites. I found one directory that didn't allow me to add a non-www, so I change on every listing site or directory to www, It seems you can get your google ranking harmed if there is variations to access your website.I know that everything will arrive on the same page no matter I have a non-www or www, but the Website is Hosted on Godaddy and it seems that they don't use the www version even if you want. So my domain is non-www.
On the other hand I just have been notified that google webmaster tools couldn't verify my account and I did it again and is verified now. Cheking again on WMT, it doesn't show the previous links that were under "Links to Your Site" it just show "no data available". Here in MOZ it show different results between non-www and www
Why is this happening? What should I do? And in which way my google ranking can be affected by this?