Board Thread:Questions and Answers/@comment-73.100.162.89-20160524164504/@comment-26692787-20160524185728

These Collector Achievements were introduced at 2016. So nothing has changed. You have to wait some time for the synchronisation with Pixel-Servers. Have you seen the pop-up for fulfilling the achievement and have you now Diesel Collector III available to you? If not, refresh the page, or restart the game. At last Resolution raise a support-ticket in-game.