My reply is the same as it was when I emailed you in reply to your contact form submission:
For this problem I can say the only solution is to upgrade to a compatible version of mojoPortal, ideally the latest version. You can also download the latest version of Form Wizard Pro from your purchase history by logging in as the user that made the purchase and click the "My Account" link. So ideally you should upgrade to the latest version of both mojoPortal and Form Wizard to ensure compatibility.
The Form Wizard product page has information about the version history and required version of mojoPortal. If you had contacted us before installing it and told us your mojoPortal version from Administration > System Info then we could have sent you an older compatible version of Form Wizard. But since you already installed it, downgrading Form Wizard to an older version is not feasible and the only way forward is upgrading.
If you are starting a new site be advised that there will be a new release of mojoPortal and Form Wizard in the next few weeks mainly to update to a newer version of AjaxControlToolkit. Both mojoPortal and Form Wizard depend on the AjaxControlToolkit and must use the same version. Updates to the AjaxControlToolkit have historically been one of the main reasons why newer versions of Form Wizard cannot work with older versions of mojoPortal. Though your error is not because of this but instead because of a newer EmailValidator control that was introduced in a version of mojoPortal newer than the one you have now and the Form Wizard version you have installed depends on this control which does not exist in your version of mojoPortal.
we do not have an email address for support and no such address is listed anywhere on this site, we provide support here in in the forums
as far as issues with your hosting environment that is outside the scope of what I can address, you should address your host with those kinds of issues, if all else fails you could use a different host. I will say that probably using SQL CE was not the best choice, it is convenient from a deployment perspective but you would get better performance if you had used MS SQL which is much more robust. Definitely any site that gets major traffic should use a more robust db platform.