Unable to add billing address

-- url of the page with the problem -- : www.petitemonde.com.hk
-- HikaShop Business version -- : 2.2.3
-- Joomla version -- : 3.2.2
-- PHP version -- : 5.3.10
-- Browser(s) name and version -- : Google Chrome
-- Error-message(debug-mod must be tuned on) -- : Error_message

Dear Sir,

I am now using hikahsop with JFBConnect, however, when an user is created, it is not allowed to add any billing address and prompt out Error 403 Access Forbidden. So we suspect it may be problem of JFBConnect, but I found that even I create a user using normal Joomla login module, it prompts me the same error. It works only if I create user while i was checking out ad register a new user. May I know what I can fix it to use JFBConnect?

Thousands Thanks

Regards,
Adam Chi

Let me explain you how I get the error

After you add something to the cart

Step 1: Press Checkout Button

Step 2: Click next button



Step3: System prompted out to ask you for address, you fill in the form



Step 4: Press "OK", and error prompt out




** The iframe attribute is www.petitemonde.com.hk/index.php/address...?makenew=1&makenew=1




Thanks first for your help, happy Valentine!

I solve it myself~~~

I just change the button style from CSS to normal, it works perfect! Please explain if possible.