Felicia,
By policy, we don't modify other extensions on user's site. If JFBConnect has an issue, we'll gladly make any changes necessary to get you going. However, we can't make changes to 3rd party extensions because we obviously don't know all of them and we don't know what unknown affects changes might have. We simply can't assume the liability for ill-effects that could be caused.
I'm sorry we haven't been able to tackle this issue for you, but it just proves that we don't know JomSocial as well as we'd need to to help you in this case. If the changes you're making aren't appearing, we'd strongly urge you to contact JomSocial and simply say "I need to modify page 'xyz', how do I do that?" They should be able to very quickly point you to the right file and then it's a simple matter of inserting our {JFBCLogin} tag, which we can help you with. Alternatively, if you have a developer for your site, they should know it well enough to be able to understand how it's configured and what needs to be done. They also can investigate it further if there is an underlying issue that's preventing the change from happening.
If you'd like to create an admin account for us, we can gladly make sure that JFBConnect is configured correctly (but it already sounds like it is). Again though, we won't be able to make the change you're looking for as it's modifying 3rd party extensions. To send me any private details, you can Private Message them to me by clicking the arrow under my picture (<----) and hitting the mail icon.
Thanks,
Alex