blue_shift Your framework provider has a freebie you can use as a test? This could at least isolate the problem to zt2 or jch.
(in truth, I write and publish both music and photography, and have had to unhook all cloud apps and self-host everything; from my own sites I have discarded API's from soundcloud, dropbox, google, microsoft, and flickr because they keep changing their API's and their terms. For my clients, FB and IG have been harder to kick - something Joomla should think about.)
edit: i noted that the scripts were running through jch - you might try excluding this module. I have had difficulty with these types of functions when compressing or optimizing scripts that ZT needs when positioned above the fold.
