Newsletter Not Loading Correctly in Create Screen

I am using the e-Newsletter plugin and it works great locally, but when I go to use on production it is having issues loading. I think some of them may be related to https://

1. The main Template tab has all the templates listed to the left instead of in two rows. (This seems to be fixed by loading insecure content).
2. The Content tab has editor is really tall with a lot of grey around it, and you have to click in just the right spot to be able to write in it.
3. The Preview tab does not load a preview at all.

I did a short screencast and put it up here if it will help identify the problem.