50% traffic drop after upgrade to vbseo 3.5.2

Hi guys, my web site, NC: NIGHTCLUBBER.com.ar - La comunidad clubber mas grande de Latinoamerica. is running Vbulletin 3.6.4 and we have update vbseo to 3.5.2 on September 12. From that day up to today, we keep on losing traffic each week, this week having lost more than 50%.
Could you give me your opinions please ?
Thank you very much

Hello,

There appears to be a few issues with your site.

Ideally, I would suggest you upgrade vb to at least 3.7.4 for best compatibility and bug fixes within vb itself.

Your skin has many errors in it
[Invalid] Markup Validation of http://www.nightclubber.com.ar/foro/58/seccion-pedidos/ - W3C Markup Validator

I would also suggest removing the intersital ad for testing to see if traffic/indexing picks up again, as those can have a drastic negative effect on users.

Thanks Brian. Regarding Vbulletin version, i will try to have it updated asap, we have to do a check for some hacks we are using.
Thanks for the notice on skin validation, i will have a look at that too.

Regarding the intersital ad, are you referring to the layer in the home ? It shows one time per navigator session, we have put it today, and will be only for two weeks.

Regarding web site speed of loading, what do you think ?

Also, in extreme cases, regarding google and vbseo upgrades, in how much time is traffic back ?

After I installed vBulletin 4.0 with vBSEO 3.5.2 Google Traffic spiked on all my forums and it continues to do so ever since.

So it might be a good idea to upgrade.

StarBuG

You need more backlinks to better your ranks and increase traffic.