SOLVED Registration does not complete

-- url of the page with the problem -- : modastore.gr
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 2.5.20
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

I have just finished will products and configuration and I have set the site online.
I had set checkout as guest but as the field email was missing I have changed to "Registration"
The problem I face now is that the registration does not complete.
It means that after I complete all the asked data, press Register, I stay in the same page with the registration form empty, but it appears a simplified registration form in wich there is a proposal of my own username in the email field and password (probably my password)

Waiting for your reply I have done all possible checks. The message I get after all methods of registration is the same. "Please login or register" as if I had left blank all fields

Still waiting for your reply, I have searched the forum and post #157246 gave me an idea.
If I press "Enter" instead of the button "Register", then registration works fine.
Temporarily I show a message with instructions, but it is not the way it should be
Please advise a.s.a.p. as the site in online

I came here looking for this very problem. You'll likely find the answer you need has been provided about 21 threads past your post. Another few minutes searching the forum would have saved you several hours of impatient waiting.

hikashop.com/forum/checkout/868353-unabl...checkout.html#156651

Having submitted that last comment, I realize it sounds a bit rude. HikaShop support is some of the best I've ever experienced and the "still waiting" when only a few hours had passed rather irritated me. Especially when the (likely) answer was just a few posts away. My apologies for being rude.

Before opening that thread I had search almost every other thread.
I have allready seen the one that you suggest but I think that this one is more suitable www.hikashop.com/forum/checkout/868474-p...in-error.html#160092
I know that you try hard, for that I am sorry for my impatience, but it was a bad supprise for me and my client to face the problem after all succesfull tests before going on line.

Thank you very much
In case of update will I have to change the code again ?