Error and how to

The button CSS display is caused probably by your template's CSS.
Could you give a link so that we can give you more info on the problem ?

Regarding the SSL error, I could find several solutions proposed online, nothing related to the website itself:
answers.microsoft.com/en-us/ie/forum/ie8...1c-b1f8-091375c866d2
www.google.com/support/forum/p/gmail/thr...197160d4c2d28f&hl=en
I would tend to say that the problem comes from your SSL certificate which is not configured properly on your server.
Of course, if you turn off the "force SSL on checkout" option AND that you access your website with a URL with HTTP instead of HTTPS you won't get that error. So I suppose that even after turning that option off, you are still accessing your website with HTTPS, thus you still have the problem. But in any case, the problem is not related to HikaShop.

If you don't want to category image on products listings, you should edit the hikashop options of your menu and turn off the "show image" option there.

In the file buyandselleco.com/templates/rt_ionosphere/css/template.css you have the code:
body, .button {
height: 100%;
margin-bottom: 1px;
font-family: Helvetica,Arial,sans-serif;
}

add the code below to fix that problem:
.button {
height: auto !important;
}