Can you check your php error log (if one is enabled) to see if there's any errors in the user data plugin?
As far as I'm aware your site is the only one who experiences this issue, so unless you can find some error message I'll need AdminCP and FTP info in order to check it out (would have to be tomorrow though).
As far as I'm aware your site is the only one who experiences this issue, so unless you can find some error message I'll need AdminCP and FTP info in order to check it out (would have to be tomorrow though).