Currently imagebam made a change where they no longer produce static thumbs.
If you see your gif playing once you post, try to use a smaller thumbnail and if that does not work use a different approved host.
Our gif only content threads have a rule where all thumbs must be posted as a static thumbnail that does not play.
Below is the full set for anyone who wants it as well as some of her other Bulma sets , but these file sizes are lower so these are probably more compressed.
Therefore, please do not use imagebam, or any host, that provides live playing gifs in those specific threads.