i don’t see my picture neither the text when i click on preview button in edition mode
i used a gif
it was due to my ad blocker 
However i used an animated gif i made myself and I don’t see animation on preview.
The ad i saved previously disapeared
We do not, at this time, support animated gif or video.
I will look into your ad disappearing.
The ad section has since bee redeveloped and should address any issue you were having. Please let us know if any further trouble arises.