SS IPTV

Hello guys

Since this morning , when i try to open ss-iptv, i only get a black screen on my smart tv
toshiba 55u6763dg
I try to remove the app, to download it again but it's still the same
Is here some one who can help me to fix the problem?

Thanx

Could you clarify the issue:
You don't see the interface of the SS IPTV
or
You can see the interface of the SS IPTV, but unable to watch a video or stream? Does the Open TV channels work?