PlexConnect RN2xx 6.6.0

Is there a known issue with PlexConnect and PMS for PlexPass, 1.2.3.2914-1ff0f18, running on RN2xx?

I'm having trouble with my set up - I can see the PMS, it show media placeholders, no thumbnail images and will not play media. Everything was working fine for me, with regular PMS on Arm6.x RN2xx, before I updated my NAS to 6.6.0. That broke my Plex so I purchased a PlexPass to get the app. but now my ATV3 will not play media.

I can use my iPhone to view all of my movies just as always but my ATV3 is not working.

Do I need to remove, uninstall all of the PlexConnect files and start over?

Any input would be greatly appreciated.

Thanks in advance