There is no HxH beyond eps 62, there are, however, 8 episodes OAV.
This OAV continues what is left in eps 62.

After the first 8 episodes OAV there are also 6 episodes OAV called Greed Island. The latest OAV called Greed Island Final will come out this month.

You can dl the OAV along in AnimeSuki, try to search for a group called AkuFansub. It is quite old, so I guess it will quite hard to find

For HxH: Greed Island, AnimeOne has this title