Would vBSeo help my site?

[Arkidas]

<a href="http://blizzard.cd" target="_blank">Blizzard Citadel</a>

My site has a great look, a great domain and even has a little traffic. It used to be very active in the past so it has some topics / posts, but then I took it down for 3 months and it's been almost dead since I brought it back up. Furthermore, only two results are received if you search "http://blizzard.cd" on Google ( Although I'm in the top place if you search for "Blizzard Citadel" ).

Would vBSEO help my site gain traffic or should I wait with it until my is more active?

Thanks.