The new created CISS Picture can not be saved.
A click instruction needs to be assigned to the picture.
In the CISS configurator (View), right click on Pictures (CISS-Themes -> REDDOXX Default Theme).
Click Add Image and select the image which you would like to upload.
At Click Instructions, double-click in the Click Instruction field next to each language and enter the text that should be displayed in the CISS reply.