Not sure if this is a bug or a permanent thing in Twitch but, it seems that Mods are only able to redeem a channel point reward once per stream, where viewers can redeem it multiple times. This has happened to me as a moderator and also to moderators in my stream.

If this is something that we are doing wrong, can someone point me in to the direction of how to fix it. I've checked my rewards and, apart from one that I want to have a limit/cooldown on, the rest are all switched off.