There's no time limit on editing posts. You could even edit it after someone has already responded (though that'd be a waste of time as they're unlikely to notice if you edit to ask a new question.)
Kes is right that this thread probably isn't the best place for plugin support questions which is why there's the original character creator
thread and also my f.a.q.
thread. Though for your second question I think you will to make a new topic in the
plugin support section since it sounds like a conflict. Having faces isn't part of the default battle HUD, so I'm assuming you're using plugins to show them and it's conflicting with CCEX. (Alternatively- you've ordered them incorrectly.) You need to debug your project and go through your plugins by turning them ON/OFF to find out what's causing the issue. Once you think you've found it, try to replicate the issue in a blank project before going ahead and reporting it.
You might also want to check that your custom character's face is working correctly in the menu (and again if you're using plugins to modify the appearance of that, try turning them off too.)
The custom characters face not automatically replacing Harold's isn't broken- that's how the plugin was written. (You might want to double check the plugin help again), but for each show text command that you want the custom face to appear in, you need to write <CC Face: [id]>. e.g. <CC Face: 1>
(You also need to make sure that you have given it a face image first, it can be any face, but the command won't work if you've left that empty.)