It does look like playback actually works!
Overall not very intuitive, still poking around to find stuff and a few things seem backassward, but it is functional which is better than the last 3-4 iterations of iDMSS
Thumbnails are interesting... not sure why mine all look the same visually ?
Once you actually find and configure a favorite, you can open the app and hit “Live” and get your last viewed set of cameras, but lacks the “auto load last view” feature which was one of the only things the old iDMSS did well...