1. The editor randomly dissappears in the front end and together with my content
2. When switching from editor to code or preview, it freezes
Without going into an overly complicated explanation of the cause of this, it appears to be triggered by the Spellchecker
State option being set to
Yes.
When this option is set to No (the default), editing in SP Page Builder worked fine for me in the front-end on your site.
3. (Minor), the layout in JCE admin backend is not right
This is the result of some css inconsistencies in your admin template. There are some other issues with this template that affect other controls in the JCE Administration (and perhaps elsewhere in the admin)
Ryan Demmer
Lead Developer / CEO / CTO
Just because you're not paranoid doesn't mean everybody isn't out to get you.