I did release all Crystals with the help of the goddess but still cant cross that fire nor did I get any power increases for leah.

my current missions are: The Demon Invasion, Mystery at the Academy and A Dark Pressence?

and when I ask the goddess for advice she says a powerful pressence west from the royal city deep within the forest. But i already was there and cleaned the temple. Does anybody know how to continue? (want to see even bigger pregg bellies on leah)

You've basically reached the end point of the game so far. Leah can only get to 300 power for now and the Academy's end is bugged to where the crystal is mostly broken. So outside of side missions, you're done. Just enjoy exploring and wait for next patch!

have u released the crystal near the honey bee palce