Could not use 9 ability. Not sure if this was from the deck 9 option that was checked.

I asked on the cuttle.cards discord. They have a little history and community for the game:

As noted in the "variations" section of the pagat page, this effect, as written is almost **entirely** useles, as the opponent can simply play the returned card on their next turn, at which poitn we are in the exact same situation with the sole change of the person who played the nine no longer having the nine in their hand
This means that in the exact wording on pagat, the only time where playing a 9 for its effect would matter at all is a time where it immediately wins you the game (because you targeted a jack), and the only time that this would be any more beneficial than simply playing the 9 for points is when the player with the 9 has exactly 11 points and their opponent has previously jacked a 10
That's an interesting scenario but it clearly doesn't succeed at delivering an effect that captures the feeling of "sending things back" while being paractiaclly useful
cuttle.cards actually predates the update to the "Variations" section where the suggestion for forcing opponents to wait an additional turn was added to the pagat page (only under variations)
When I was first learning the game with my sister back around 2013, it was quickly clear that the 9's effect as written wasn't useful. We aimed to make a minimal change to make the effect usable, while preserving its feel. That's why we landed on the same idea you now see in the pagat page: requiring the opponent to wait an additional turn to play the returned card