Within the .mf file, you have it specified to go to repatchafail.html when there is a failure with the captcha. Right now that page doesn't exist on your website, so you'll need to create a repatchafail.html and upload it. To help users on your site, you'll want to setup that page to let them know why they are seeing it.
As for when captcha failed page shows up, whenever the text entered in the captcha is incorrect or it's simply not filled in, users will be redirected to the captcha failed page. We did some testing on your site and so long as the captcha is correctly written in, it is successfully submitted. The only time that captcha failed page shows up is when the captcha field is blank or incorrect. Please note that this will occur with our without the other form fields being blank. There isn't any server side form validation so the other form fields can be left blank. If you want to validate and ensure the other fields in your form are filled in, you'll need to setup some JavaScript validation on the page. If you're not familiar with doing that, we'd recommend searching online. There are a number of sites that will provide help with writing form validation. You can find a list of search results at
http://bit.ly/GRYLdX . Microsoft Web Expression may also provide some assistance in setting that up so you may want to check their help documentation.
On the confirmation/success page (
http://www.cypruspainters.net/confirm2.htm), it's listing information not relevant to your form. Apparently you were using a form plugin with Microsoft Expression which relates to that. With our mail form service, you can't pass the input values to the confirmation page. That's not currently an option. That said, we add new features such as this based on demand. So, we've added your name to a feature request list and you'll be notified if and when that feature is added to our mail form service.
So, for the confirmation page, you'll need to delete what's on there and replace it with a notification telling your users it was successful and that it has been sent to the webmaster. The confirmation/success page can say anything you want. It's simply an HTML page you create where the form redirects to when it is successfully submitted.
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