The next release of JFBConnect and the SCLogin module should fix this issue. It's planned for release on Friday. The uneven buttons occurs on some sites with specific templates that try to override our button styles.
When the next release comes out, please upgrade both JFBConnect and SCLogin. Otherwise, you'll need to diagnose the CSS issues on your own since you don't have an active subscription.
Thanks,
Alex
Problem with JSLogin Button
