The one who solve's this issue clearly will have my recognition for life.
When I use the Smarthings app to send one of my own picture in ambient mode to the TV it works fine, but when I click the Ambient mode on the remote it never puts back the same picture.
I can't put a specific picture as default when I swith to Ambient mode. Strange no ?
Is that because samsung cloud is now disabled ? ( So the TV can't reach out to the picture I decide ? )