I have two sites with Pro. The first one works fine, however the new one will not install templates. The little green line at the top zips along happily until it gets almost to the end then stops. The images install in media, but the template never loads to the page. (Same behavior if creating a new page from template or adding template to content section of existing page.) JetPack is the only plug-in enabled.
Update: While playing around with it, I have found that some items from DesignCloud will load and some will not. Specifically “Architecture Portfolio” will not (which is the original template I was trying to load).