i'm begining to think the old rule that it was ok to use the same code on more that one device has changed. i have a nvidia shield and a windows 7 machine on different hdmi ports so it's easy to switch between the two. i have always been able to close kodi on one machine and open kodi on the second machine with no issues.
it seems with the change in the url for iptv66 this is not so easy to do. consistently a iptv reset must be performed when switching between the two.
however i will say if this is intentional to prevent hacking and improve service i am all for it.