There’s was an in-game cash offer to purchase materials and get 70’s Joe over the weekend, but TinyCo have confirmed there was a glitch causing 70’s Joe to disappear once unlocked. If you’ve encountered this please contact TinyCo support.
There’s 2 ways to do this, The first and best way is through your game main menu, select Help & Support and then tap ‘Contact Us’.
However if this isn’t possible, then you can contact support via email. The email address to use is – email@example.com
~ Russian Tigger