When you open the box and choose the pet slot, it gives you a pet slot totem and you have to use that as well. Have you used the totems?

Yes, what said. When you use the Loyalty Totem, it will turn it into the specific totem that you chose. You then have to find that item in your inventory and use it again to get the reward. The one you're looking for is called "Loyalty Pet Slot Totem". There are two in your inventory at the moment, from the two loyalty totems you redeemed, so just find and use those and you should be all set :)

Not a problem! Glad it was that! Locking this up.