various problems to register and authenticate users jomsocial and JFB

I have several errors when trying to register users jomsocial , I will list the different steps that I am doing and go explaining what happens at each stage.

the registration form is being performed in the jomsocial since users need to fill specific data in the registry.

page jomsocialhttp://www.wofit.tv/new/index.php?option=com_community&view=frontpage&Itemid=162

1. performed from the normal registration application of jomsocial and works perfectly.

2. income from the home of jomsocial with facebook button appears and I pop up the application authorization normally accept and give me but not continuous with the registration page , it stays in the home of jomsocial and nothing happens .

3. Now try to login with the same button from facebook page jomsocial registration and from there if I register and I coorectamente links to facebook, but in the end of the process I get an error that says " 42 Failed to update the contact appears : COM_CONTACT_ERROR_UNIQUE_ALIAS " but yet successfully performed registration with facebook

4. sign up from the home of jomsocial with google+ button and this brings me to form jomsocial normally and at the end I get the same error " Failed to update 42 Contact: COM_CONTACT_ERROR_UNIQUE_ALIAS " but actually subscribes.

5 . now I try subscribe to twitter and I get the following error " Desktop applications only support the oauth_callback value ' oob ' / oauth / request_token "

Now that I 'm already registered to seek access from the home of jomsocial with different accounts

1. with jomsocial user from normally from home

2. facebook with the button I can not access my account from the home of jomsocial , but if I enter facebook button that is inside if I enter the registration normally.

3. I am now trying to enter from the home of jomsocial with button google+ and I link my accounts google , selection that registered me and stays at a blank page completely , does not end the process, the url in which remains is the following

Alex thank you very much , it solved many of the problems you got with what you indicated me but yet I have trouble with 2 things.

1. when trying to register a user with google+ firefox let me google identify the user and passes the registration form , but will not let me go from there , the next button does not work. and if I try to do it with chrome I get the following error .

Error:redirect_uri_mismatch
The redirect URI in the request: wofit.tv/new/index.php?option=com_jfbcon...back&provider=google did not match a registered redirect URI
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Detalles de la solicitud
cookie_policy_enforce=false
scope=https://www.googleapis.com/auth/plus.me www.googleapis.com/auth/userinfo.email www.googleapis.com/auth/userinfo.profile
response_type=code
redirect_uri=http://wofit.tv/new/index.php?option=com_jfbconnect&task=authenticate.callback&provider=google
access_type=offline
state=77efd42868cbd206ed28b76dc8f53661
display=page
client_id=9979115145.apps.googleusercontent.com

Perfect I no longer get the error, but firefox does not allow me to continue, it stays in the registration page and not continuous button below.