Sorry for the delay,
I did as instructed and pasted the
<div class="updated" id="mc_message">
<?php echo mailchimpSF_global_msg(); ?>
</div><!-- /mc_message -->
code in front of
</div><!-- /mc_form_inside -->
and the success/error messages are still in one place. I also took out the CSS code from earlier and it still didn’t work.