Have you an link to the site…

I think you have really an small problem with how you published your forum/modules etc..

Maybe try an fresh reinstall

Search the forums for Illegal mix of collations or collation (this has something to doe that SMF and Joomla! are using now two different collations

Example:
Joomla! is using latin
SMF is using UTF-8

This can cause problems during syncing etc.....

just search the froums on Undefined offset and try the given sollutions.

Also what is the Bridge version

This is normally caused by setting the Forum link to Registered access. This causes Joomla to disallow the login because the URL used to log a user into SMF is controlled as a registered link only. To work around this, Graham Ball posted this method on the Joomlahacks forums:
It is possible to do this by creating two Forum menu items. The first one is 'not published' and set to 'Public' access and the second one is 'published' and set to 'Registered' access. You must make sure that the 'Itemid' parameter shown in the SMF Component installation options points to the id of the first (i.e. unpublished + Public) Forum menu for it to work.

just re upload the files in administrator\components\com_smf (just to check if al files are uploaded ok)
also check the Chmod rights.
What is the Bridge version?
What language are you using?

you can make a clickable link in the Miscellaneous Info:
You have to use HTML code for this

Or when you want somthing else you can take a look at an other contact form
http://extensions.joomla.org/

The main reason that I first refer to the User Guide is that most users are not reading it carefully. The User Guide is made not only help the user with the installation but also to understand how the Bridge is working.. This means that not all questions are not answered latterly but when you know the basics you can help your self with the user guide.

And most basics questions are answered before on the forums.
http://www.joomlahacks.com/component/option,com_smf/Itemid,94/topic,2665.0

It is not about getting a better post count. But when you have read the forums you had all ready known. Think you have to read the forums first before you give reply’s like this.

So on topic:
Where did you select the SMF registration and how (maybe screen shot)
What loging module are you using.

I did a small test on my test environment with the 2.0.2.1 and for me it works on an basic installation off J! 1.0.13 and the SMF CSV release (also known as 1.1.4)

You will find more info about the configuration in the User Guide

just search on
Allowed memory size of 8388608 bytes exhausted

there are some other topics with this problem. Please try the search option....

http://www.joomlahacks.com/component/option,com_smf/Itemid,94/action,search2

Please search the forums. This is disused all ready…. At this moment the tester team is testing the new version. When the testing wends ok then you will see the news on the forums. At this moment we can not say when there is a public version of the Bridge. First the new release have to be tested before it can be released.

So just check the forums so now and then for the update

Please also mention the versions you use and witch registration you are using.

The user sync is when the user is logged in the first time. So if you use the Joomla! registration the user has to logging first trough Joomla! before the user is be synced.

Klik in my sign on “need help?”

Please and use the search option next time ….
http://www.joomlahacks.com/component/option,com_smf/Itemid,94/action,search2

This could be found in the User Guide.
Did you check the CHmod rights?