Sorry for the delay. I just tried to register on your page. Have you made modifications to the loginregister template file that is used to ask the user to fill out profile info? On that page, there should be a box for "Permission for profile import granted. ". I'm seeing that option on the left hand (login) side of the form, but not the right. That box must be selected by the user in order to import profile information that is not pre-filled with LinkedIn data, such as the avatar.
Do you know where that setting went? If you accidentally removed it, it needs to be added back. Explicit approval by a user to import their information is one of the requirements of LinkedIn's Terms of Service, and therefore something we implemented. We don't necessarily like the checkbox and requirement to ask, but it needs to be done.
Let me know if you get that added back or if you haven't made any changes to that template file. Once we understand what happened, we can investigate further, if necessary.
Thanks,
Alex