Noehl, thanks for the suggestion, unfortunately this has made matters worse.
I sync'd, backed up my desktop and then uninstalled/reinstalled the app.
I went to sync, started to type in my wifi IP address of 10.0.0.8. As soon as I get to the second dot "10.0.", the app crashes and closes. This is the same behavior I was seeing before so now I can't even sync. :(
I've updated to the very latest 10.1 (this is on an iPhone 6) and the behavior is continuing. I'm now also getting a warning that TR needs to be upgraded for compatibility. I could take a video if you want to see; not sure what else I can do?