Problems fusing dragonary dragons?

Make sure you are following these steps:

1- select base dragon and drag into center
2- select rare ember

  • THEN slots open up for the additional dragons -
    3- drag each dragon you want in fusion into the 4 slots
    4- click fuse

You must have the required amount of CYT in the game to complete the fusion, so be sure to double check!

thank you!