Yes I have. It is working fine and great. My steps are as below, in case anyone is asking and my TV is JU6600.

1. Change my TV Internet Region to Malaysia
2. Restart TV, Hypptv Everywhere automatically appears among the Tizen Apps (already installed)
3. Login using myiptvaccount@iptv and iptv password
4. Watch all my subscribed Jumbo channel

The quality is just ok on Ultra HD TV. It looks better on Hypptv Everywhere for Ipad Pro because of the smaller screen. To me, it's just watchable for me to catch-up on BBC Earth and the Entertainment Tonight and The Insider. Want a better quality, I watch straight from Hypptv Box.

Mine is also the same, there is 1-2 second freeze on almost all the channels. Happens in certain interval of 5-10 minutes. Still watchable. I have since downgrade my subscription from Jumbo to Aneka, to have that 30 ringgit less to be allocated to an acceptable IPTV services. I downgraded using the TM Live Chat.