I'm not really sure to make of your post. I have not used Hippo since the update but assuming he is still working correctly are you certain you meet the requirements to use the ability?

- Pet must be engaged and within combat distance.
- Pet must have at least 100 tp.
- You must have sufficient "Ready" charges.
- Pet must not have any status aliments that prevent ability use, ie sleep, petrification,
amnesia, terror, stun, etc

If this is a question about macros, the correct command is:

/pet "Jettura" <me>
and
/pet "Fantod" <me>