Checkout Not Working -

-- url of the page with the problem -- : breakthroughfitnessny.com/hikashop-menu-for-products-listing/
-- HikaShop version -- : 2.2.3
-- Joomla version -- : 2.5.11
-- PHP version -- : 5.3.28
-- Browser(s) name and version -- : Chrome & IE

First time setup of Hikashop so may be user error, apologize ahead of time if so. Trying to mess with it to get a checkout to work, log in, select address and select PayPal (don't have my Autorize.net) information in just yet, click Finish and nothing, redirects right back. Any ideas?

Ps - I haven't messed with the styling yet...so I know the styling is way off.

Great, that worked but now can't get my Authorize.NET to work, getting this:

The following errors have occurred.

(99) This transaction cannot be accepted.

The Debug log Report is Empty. How can I correct this?

THANKS!

Ok, i was given a bad Transaction Key so got that taken care of. However, I am currently in Test Mode and when I complete the order, I get the receipt from Authroize.NET however am never redirected back to my site. I tried forcing a return URL:

Return url : The url you want your users to be redirected to when they finish their payment on the Authorize.net interface. By default, they will be redirected to the after_end page of the checkout process which will thank them for their order.

Still nothing after putting that in either....thoughts?