Hi,
The theme has nothing in it that would affect sharing your pages to Facebook. If it were, it wouldn’t be up for sale on ThemeForest (it would be rejected at review), and you would not be the first to report this.
Unfortunately, out of thousands of people using it, you’re the first to report this kind of issue. My suggestion is that you check your hosting account (it might have been hacked), or look for a better web host.
Actually, taking another look at your web hosts reply, I would suggest definitely start looking for a better host – they have no idea what they’re talking about when they’re making that remark regarding the theme and are instead passing the blame just to quickly get rid of your questions…
Regards,
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Cosmin – Support