So today I brought 2 cub sex changers and used them on these two lions:

https://www.lioden.com/lion.php?id=794210269040
https://www.lioden.com/lion.php?id=794210269041

I got the notification that they where in fact now female, but no they are still male. (I didn't screenshot it because I thought everything went through as usual.)

I tried troubleshooting the problem but I just can't see the issue:

°These two have never been on patrol. (I know that's not a requierement for the cub sex changer)
°They have never been on a raffle or trade.
°They are 13 months.
°There was a never a notification saying I wasn't allowed to use the item or that there was an issue.
°I asked a friend to check if they where still male from their account, thinking that maybe they where female now but I just couldn't see it yet. But no.
°I have used this item before, this is the first time this has happened to me.

I don't know if this is intentional or a bug. Im very lost here, Help?