So there appears to be a bug here, the quest related to the UI is missing for your character, which explains why you can't interact with it. There...
This is how the quest works, once you have completed it you can do it over and over again, with the intention that you use it on new pets.
Seems like we missed fixing this in the last update then. Thank you for the report, we will try again in the next one!
Interesting to hear that it's only with this particular quest you are having trouble with. Can you provide your character name? I will take a...
As mentioned we are still looking into the best way to solve that for you, we have to do it. It's likely going to happen during a Server Check.
The quest problem should now be fixed. For you who are still unable to turn in the quest we will look into how we can best resolve it for you.
From my understanding here is that it happens for both Transformation skills, and it happens due to Transformation having its own frame delays....
Separate names with a comma.