I bought enjin from my Jaxx wallet, I didn't receive anything yet :-(
Jaxx does not support adding tokens (at least yet) so you should use for example myetherwallet.
From jaxx you can see your private keys like this:
Select the Menu at the top right of the Jaxx screen.
Select Tools.
Select Display Private Keys. If you added a security PIN, you will need to enter it.
Select the key pairs of your choice (Please note that tokens can be found within the Ethereum Private Keys list).
Then open up my etherwallet. Press "Send Ether & Tokens", then enter your private key which you got from jaxx into the field.
Then just follow the following guide to add Enjincoin to myetherwallet:
https://medium.com/@enjin/how-to-add-enjin-coin-enj-tokens-to-your-wallet-b80d6e3afed1