Sorry to hear you are having issues.
I have over 4500 dreams in my gallery so I know a little .
But a .gif won't work , you need actual video footage not a video of a .gif to make dreams .
So 15 seconds of any video footage ( high resolution ) converted to MP4 or AVI ( for best loops )
and for good loops the video may require some video editing .
will work and play correctly as a dream file ( for you own personal use )
To upload them to the site then you may need permissions to do so and show links .
Stardock Community Assistant