Justin was also adjusting to life on earth, and dating his native wolf boyfriend he does not have any magic powers but was able to keep up with the others.
His parents weren't really aware of the disappearing act he pulled, as they were vacationing on an off planet but once they found out he apologized for that.
Lastly he was able to help out Dakota and his family just as Dakota did the same for him, while sometimes spending money to help with the preservation of the native wolf kingdom.